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Zeitschriftenartikel zum Thema "Mining railroads"
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Zhang, Pei Sen, Wei Yan und Wen Quan Zhang. „Simulation Analysis of Surface Deformation by Strip Replacement Mining in the Short-Distance Thin Coal Seam“. Advanced Materials Research 250-253 (Mai 2011): 193–97. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.193.
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The strip replacement mining in short-distance thin coal seam is one of the effective methods controlling displacement deformation of overlying strata and surface subsidence in coal mining under buildings and railroads and water bodies. The method has a great theoretical significance and application value by increasing recovery rate of coal resources and cutting down the effect of coal mining on environment and surface of mining area. The numerical simulation method is adopted to study the surface deformation characteristics by the strip replacement mining in short-distance thin coal seam. Such conclusions are drawn as follows: the strip project of forty meters mining with forty meters reserving is quite suitably selected while half of mining rate; ten meters in replacement width of coal pillar is relatively optimum; the feasibility of the strip replacement mining technology is verified by the simulation. Therefore, the strip replacement mining technology has provided one kind of new thought to coal mining under buildings and railroads and water bodies.
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Biays, Pierre. „Une ville d’Abitibi : Senneterre“. Cahiers de géographie du Québec 2, Nr. 3 (12.04.2005): 63–74. http://dx.doi.org/10.7202/020062ar.
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Senneterre is a typical pioneer town in the Abitibi region. The main factor of development of Senneterre is its location in connection with the previously built railroads, new railroads and railroads to be built which are linking the settled part of Abitibi and Northern Ontario as well as the Montréal and Québec regions with the new mining and forestry districts of Bachelor, Chibougamau and Albanel lakes. In addition, sawmills and C.N.R. repair and maintenance shops are important industries in Senneterre.
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Sherin, Egor. „Prospects for the Coal-Line Transport Introduction in Russia“. Bulletin of Kemerovo State University. Series: Political, Sociological and Economic sciences 2019, Nr. 4 (30.12.2019): 441–47. http://dx.doi.org/10.21603/2500-3372-2019-4-4-441-447.
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The research featured an economic-geographical analysis of the main problems of Russian domestic coal transportation. The problems are related to the ultracontinental position of the main coal-mining regions, railroad workload, and overpriced freight rates. The paper focuses on the advantages of coal-line transport as an alternative to railroads. The author also describes positive aspects of water-coal fuel and summarizes related domestic studies. The article introduces a coal-line project that links Kuzbass and the Urals, its deployment factors, prospective consumers, and design capacity. The route runs from Novokuznetsk to Yekaterinburg with branches to the north and south. The route can be divided into stages, e.g. up to Novosibirsk and to Omsk. Each stage can become final destination, if needed. The prospects of coal-line extension in the western and eastern directions are considered.
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Klosek, K. „Prevention of Damage to Highways and Railroads in Mining Areas“. Journal American Society of Mining and Reclamation 1994, Nr. 4 (1994): 101–10. http://dx.doi.org/10.21000/jasmr94040101.
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Wen, Xinglin, Zhengchen Ge und Fuyu Zhang. „Study on the Migration Law of Overlying Rock in the Upward Layered Continuous Mining Face of Thick Coal Seam with Paste Backfill Mining“. Mathematical Problems in Engineering 2022 (07.11.2022): 1–12. http://dx.doi.org/10.1155/2022/7297477.
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With the massive mining of coal resources, coal mining under special conditions such as “Coal mining under buildings and railways and water-bodies” thick coal seams has became a key concern for relevant scholars. As a mining method to effectively replace “Coal mining under buildings and railroads and water-bodies” thick coal seams, paste backfilling is an important part of the coal green mining system. In this paper, by combining theoretical analysis, numerical simulation, and other means, the migration law of overlying rock in paste backfill mining of continuous mining face in thick coal seam upwards under the village was studied. FLAC3D numerical simulation software is used to analyze the upward separation of thick coal seams. Surface subsidence was simulated at each stage of paste backfill mining in the continuous mining face, and the influence of the backfill elastic modulus on the overburden subsidence, the backfill and coal stress, the range of the overlying plastic zone, and the surface deformation was simulated and analyzed. The elastic modulus of the filling body was finally determined.
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Hines, Elizabeth, und Michael Smith. „The Rush Started Here II: Hard Rock Gold Mining in North Carolina, 1825 to 1864“. Earth Sciences History 25, Nr. 1 (01.01.2006): 69–106. http://dx.doi.org/10.17704/eshi.25.1.a77157458q3u7757.
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From 1799 until the early 1830s, North Carolina's Piedmont had rich surface and near-surface gold deposits. Land owning farmers were interested in improving their finances through gold mining in the slow seasons. Those unable to work their deposits leased them to neighbors or landless prospectors for additional income. Over this thirty year period, the surface placer deposits were exhausted and ended the casual off-season gold mining. Dabblers and fair-weather farmers turned miners became entrepreneurs who sought investors for the hard rock mining necessaries of labor, machinery and processing technology. State government stepped in to help them by liberalizing the terms of incorporation for mining companies. The government support of mining stock companies facilitated private profits and improved the state (and ultimately federal) money supply by adding specie and advancing industrialization in mining and, contagiously, other industries and services such as textiles and the railroads. North Carolina's early industrial leaders invested in mining stock companies. However, the heaviest investments came from Northeastern industrialists and European, especially English, mining firms that insisted upon skilled managers, labor and the best technology with which to develop their investment. Thus, a new breed of miner and mining and milling supervisor, usually immigrants from the northern states or abroad, came to dominate North Carolina's gold fields from 1825 to 1864.
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Antonik, V., E. Babets, I. Antonik und I. Melnikova. „Ways to reduce technogenic landscape disturbances in mining production“. IOP Conference Series: Earth and Environmental Science 1049, Nr. 1 (01.06.2022): 012002. http://dx.doi.org/10.1088/1755-1315/1049/1/012002.
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Abstract Iron ore mining is followed by significant disturbances of the earth’s surface caused by both iron ore mining facilities (underground mines and open pits) and disposal of mining and concentration wastes on the surface (waste and substandard ore dumps at underground mines, overburden and oxidized rock dumps at open pits, tailings storage facilities at mining and beneficiation plants). In addition, operation of mining enterprises leads to creating hundreds of kilometers of above-ground pipelines, technological roads and railroads; drilling and blasting operations at underground mines and open pits lead to seismic phenomena and geotectonic disturbances of the surface in the form of sinkholes and craters in places of underground workings. The presented scientific work aims to generalize the practice of measures to optimize landscape disturbances caused by mining and develop individual issues of arrangement and technology of reclamation of disturbed surface areas in conditions of Kryvyi Rih iron ore basin. Technogenic surface disturbances accumulated during the period of economic exploitation of the region require a comprehensive solution in two directions. The first one consists in reducing the rate of new destructive impacts on the state of the relief by switching from extensive methods of deposit exploitation to all-round intensification of production (introduction of low-waste technologies, concentration waste re-treatment, oxidized ores processing, transition to technologies of internal dumping). The second one involves optimization of already formed landscape disturbances through reclamation. It is recommended to implement a number of methods of improving individual technogenic landscape formations by engineering and biological methods.
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Pavlov, O. G., A. V. Dunaev, Yu G. Lavrov, A. P. Tseyko und M. B. Shilin. „Theory behind an innovative non-disassembly repair technology for assembles in marine, railway, and motor transport, as well as industrial equipment in the Arctic“. Arctic and Innovations 2, Nr. 1 (14.03.2024): 27–44. http://dx.doi.org/10.21443/3034-1434-2024-2-1-27-44.
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Tribological compositions on the basis of layered silicates and, specifically, serpentine have been known for over thirty years. Their effectiveness is confirmed by successful application in many industries, in agriculture, on sea and river vessels, on railroads, in mining equipment, on passenger and goods vehicles, as well as by tests conducted at many leading industrial research institutes and universities of the Russian agro-industrial complex. The article presents the theoretical aspects of the technology for applying friction geomodifiers related to innovative nanotechnologies, which enable a significant improvement in the operating characteristics of new, as well as worn-out, expensive equipment containing friction assemblies.The use of the proposed technology for restoring worn-out equipment components under harsh climatic conditions of the Arctic seems particularly feasible and economically justified.
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Adleman, Daniel. „The Advent of Media Modernity out of Wild Bill's Ashes“. Cultural Politics 17, Nr. 3 (01.11.2021): 333–46. http://dx.doi.org/10.1215/17432197-9305405.
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Abstract This article positions David Milch's Deadwood (2004–6) as a narrative universe that merits serious theoretical scrutiny on account of its far-reaching account of the dawn of American technocapitalism. While Kittlerian media-archaeological wisdom situates media modernity's primal scene at the turn of the century (with the emergence of the Edisonian gramophone, film, and typewriter), Deadwood figures the multimedia Big Bang as having taken place a few decades prior, with the advent of telegraphy, photography, and railroads. In the world of Deadwood, this “Discourse Network 1876” condenses in the spectral figure of George Hearst, a tyrannical mining and media magnate who descends on Deadwood to seize and consolidate the area's gold mining rights. When community leaders Al Swearengen and Seth Bullock rise up to resist Hearst, he wields the cybernetic grid of Discourse Network 1876 to run roughshod over the town's fragile social compact. Although this vision of the American Leviathan is a bleak one (and therein resides much of Deadwood's tragic mythos), Milch's Deadwood: The Movie (2019) revisits the town a decade later and rehabilitates the notion that a tightknit community of concerned citizens can, under the right conditions, serve as a viable, but precarious, bulwark against the Hearstian electrical storm.
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Dunn, Joe P. „A Mission on the Frontier: Edward P. Tenney, Colorado College, the New West Education Commission, and the School Movement for Mormons and “Mexicans”“. History of Education Quarterly 52, Nr. 4 (November 2012): 535–58. http://dx.doi.org/10.1111/j.1748-5959.2012.00419.x.
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Inspired by Manifest Destiny and lured by prospects of economic gain, Eastern entrepreneurs migrated to the Western frontier in the mid nineteenth century. As they pursued wealth through railroads, mining, land speculation, and other endeavors, many succeeded and had their names recorded in the pages of the history of the region; others passed from historical memory. Alongside economic titans were other pioneers. Just as zealous New England reformers sought to bring Yankee enlightenment to the benighted South after the Civil War, other New Englanders looked to the West. For several of these pioneers, establishing Christian churches and colleges to serve the new populations was their mission. One of these individuals was Congregationalist minister Edward P. Tenney, whose conceived life's goal was to found a Christian college that would serve as the centerpiece of education on the frontier. Tenney was not unique, but he was exceptional in the scope and passion of his vision.
Dissertationen zum Thema "Mining railroads"
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Britz, Kevin Mark 1954. „THE ARIZONA MINING CAREER OF WILLIAM F. STAUNTON, 1883-1931 (LABOR, RAILROADS, TOMBSTONE)“. Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/291300.
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Tusing, Donald S. „Modular track panels for improved safety in the mining transportation industry“. Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2853.
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Thesis (M.S.)--West Virginia University, 2003.Title from document title page. Document formatted into pages; contains xiv, 158 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 141).
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Juna, Anwar Pervez. „On the characterisation and detection of rolling contact fatigue (RCF) type cracks in railway vehicle wheels using an alternating current field measurement (ACFM) technique“. Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7945/.
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The development of the alternating current field measurement (ACFM) technique for high-speed inspection of railway wheels/track is important to ensure the integrity of railway assets. The stress and conditions at the wheel/rail contact patch, severity of rolling contact fatigue (RCF) damage and changes in microstructure and hardness with tread depth for railway wheels are investigated. This study employs experimental measurement of RCF defects in railway wheels to understand ACFM sensor signal - RCF defect relationships. The influence of sensor frequency and speed, sensor angle relative to crack angle, lift-off distance, crack propagation angle and inter-crack spacing distance are investigated. Low rather than high frequency sensors are better suited at sizing cracks in railway wheels and track. The optimum signal is obtained when the sensor is oriented parallel to the crack angle. The signal is reduced at higher speeds. The maximum change in the normalised Bx signal component of the sensor’s magnetic field is greater for closely spaced cracks (< 5 mm) and thus overestimates the defect. Inter-crack spacing distances of 15-20 mm yield estimates for crack pocket depths that are oversized by 20-36%. The inner cracks in a cluster with four defects yields higher Bₓ values than expected and thus significantly over sizes the defects at 15-20 mm inter-crack spacing distances, whereas, the sensor provides reasonable depth estimates for the outer cracks. Crack propagation angle affects the signal. Scans conducted with the probe oriented at 90° to the cluster of cracks consisting of a deep central crack surrounded by shallow cracks results in a distinct central sensor Bₓ signal that consists of a peak due to a flux leakage effect, thus, identifying the critical defect.
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Rupprecht, Steven Michael. „Best practice for personnel, material and rock transportation in ultra deep level gold mines“. Thesis, 2003. http://hdl.handle.net/10413/4217.
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Ultra deep mining presents many challenges to the mining engineer, one of which is the logistics to support mining operations quickly and efficiently. Typically, Witwatersrand gold mines operate at depths in excess of 2000 m with stoping taking place to 3500 m and investigations underway to mine to a depth of 5000 m. As mining progresses deeper and further from the shaft, the role of logistics becomes increasingly important if production targets are to be achieved. Access to the workings is often via sub vertical and even tertiary subvertical shaft systems with working faces as far as five kilometers from the shaft. It is inevitable therefore, that distance will negatively impact the working time available at the stope face, material transportation and distribution, as well as the removal of broken ore. Possible solutions to these logistical problems may be found in the use of different transportation systems or by applying sound design and operational principles to transportation systems, both in the horizontal and instope areas. This thesis investigates the challenges of logistics for ultra deep level gold mining in the Witwaterstrand basin for mining layouts planning to mine between 3000 m and 5000 m underground with typical horizontal distances of over 3000 m. The transportation needs analysis recognised that vertical transportation is a wellmanaged and organised system and is mainly the same for both shallow and deep level operations. As a result of this, the thesis only focuses on the logistical issues of the horizontal and in-stope processes. The literature review indicates that the majority of work previously conducted on transportation focused around the area of horizontal transportation with limited inputs to in-stope transportation systems. The review concludes that the traditional locomotive transportation system is the most applicable mode of horizontal transportation. Thus, special emphasis is given to trackbound transportation. An integrated approach is taken towards mine transportation advocating that underground logistics be considered as equally important as any other discipline, Le. rock engineering, ventilation, etc. In addition, the transportation process should consider each area equally important. All to often, the transportation of rock is considered of paramount importance over the transportation of personnel and material. Thus, the planning any transportation system should incorporate personnel, material and rock. To enable this, scheduling, communication and control are important with special attention required for transfer points in the transportation system. As each site has its own particular requirement, thus the final transportation systems must be drawn up based on the specific requirements of each mine. A guideline is proposed for the design of ultra deep level underground transport systems for personnel, material and rock transportation. Thus, providing mining engineers with sufficient information and data to select an appropriate transportation system to meet specific mine requirements. The thesis highlights areas requiring consideration by mine engineers when designing a transportation system from shaft to the working face.Thesis (Ph.D.)-University of Natal, Durban, 2003.
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Van, Jaarsveld Leani. „Road versus rail debate : logistics opportunity cost of using road transport in a mining company“. Thesis, 2013. http://hdl.handle.net/10210/8523.
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M.Com. (Business Management)Transport plays a pivotal role within the South African economy as it enables the country to achieve economic growth. The transport industry does not only facilitate the movement of freight and people, it also employs a great number of individuals and forms a major part of South Africa‟s GDP. The 8th Annual State of Logistics Survey for South Africa indicated that transport costs were accountable for 6.8 per cent of the country‟s GDP in 2010. The importance of the transport industry necessitates that the industry is operated efficiently and effectively. Transport mode choices are not only made based on transportation costs but various other factors are affecting how companies choose the mode of transport for their freight movement requirements. Other factors that are considered include transit time, reliability, accessibility, capability and security/safety. Opportunity costs should also be considered when choosing a mode of transport. There are various different types of opportunity costs that exist within the supply chain, these include the opportunity cost associated with poor service levels, the opportunity cost of returning a vehicle without a backhaul, opportunity costs due to delays, the opportunity cost of holding inventory and lost sales opportunity costs. As transportation costs are not the only factor that companies consider when making a modal choice decision, many companies within South Africa have been moving their goods off rail and onto road. This study highlights the importance of determining the impact that an inefficient mode of transport has on a company‟s transportation model and costs. The main focus of this study is to determine the logistics opportunity cost of using road transport within a mining company. A case study approach is followed as the study aims to present a complex problem experienced by one company to be analysed and presented in an easily understandable format. All the data and company information used within this study was supplied by company DKVL. Data was collected through unstructured personal interviews and specific questions were developed for each person interviewed. The data was triangulated and verified through the use of company DKVL‟s financial statements. From the results of this study, the logistics opportunity cost associated with the mode of transport is substantial. This necessitates the need for companies to revise their transport mode choice on a regular basis as it has a major impact not only on their transportation costs, but also on their inventory holding and carbon emissions. Based on the findings of this study, Transnet Freight Rail (TFR) should not only focus on expanding its existing capacity, it should also focus on improving its customer service delivery. By providing poor service delivery, companies will not shift their freight back onto rail and will rather choose to use road transport to receive the benefit of reliability and flexibility, even if it is a more expensive mode of transport. The knock-on effect of companies choosing to use road transport as opposed to rail transport is significant. The quality of South African roads will continue to deteriorate, companies will continue to pay more to maintain and repair their vehicles and the transport industry will continue to increasingly damage the environment through increased carbon emissions. The impact of not having reliable rail transport is increased logistics costs which have a significant impact on the South African economy.
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Melo, Márcia Nobre Herrera de. „Transportando sonhos: a história da estrada de ferro do Amapá (1957-2016)“. Master's thesis, 2017. http://hdl.handle.net/10071/15210.
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As ferrovias brasileiras, por um longo tempo, serviram para beneficiar as lavouras de café, a indústria e o comércio, levando o desenvolvimento e o progresso às regiões servidas.
Porém, o aumento do transporte rodoviário contribuiu para a desativação de muitas, ao torná-las um meio de transporte secundário. Com o tempo foram abandonadas pelo poder público.
Tais fatos aconteceram em todo o Brasil e, na Amazônia brasileira, não foi diferente.
A Estrada de Ferro do Amapá, objeto de investigação deste trabalho, foi construída pela empresa Indústria de Comércio e Minérios-S/A (ICOMI) para transportar o minério de manganês, das minas de Serra do Navio ao porto de Santana. Atualmente, a Estrada de Ferro do Amapá encontra-se abandonada, depois de 58 anos de existência. Durante alguns anos desse período, foi o único transporte de passageiros e cargas entre Santana e Serra do Navio, sendo ao longo de sua linha construídas vilas, comunidades agrícolas e estações, que
contribuíram para o crescimento e para a economia das cidades ao redor.The Brazilian railroads, for a long time, served to benefit coffee plantations, industry and commerce, bringing development and progress to the regions they served. However, the increase in road transport has contributed to the deactivation of many by making them a secondary means of transport. After a while they were abandoned by the public power. Such facts happened all over Brazil and, in the Brazilian Amazon, it was no different. The Amapá Railroad, the object of investigation of this work, was built by the company Indústria de Comércio e Minérios - S / A (ICOMI) to transport the manganese ore from the Serra do Navio mines to the port of Santana. Currently, the Amapá Railroad is abandoned, after 58 years of existence. During a few years of this period, it was the only transport of passengers and cargo between Santana and Serra do Navio, along its line were built villages, agricultural communities and stations, which contributed to the growth and economy of the surrounding cities.
Bücher zum Thema "Mining railroads"
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Yungkurth, Chuck. Anthracite railroads & mining in color. Scotch Plains, NJ: Morning Sun Books, Inc., 2010.
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Bill, Taylor. The Northern Pacific's rails to gold and silver: Lines to Montana's mining camps. Missoula, Mont: Pictorial Histories Pub. Co., 1999.
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Atkin, Claude F. Mining, smelting, and railroading in Tooele County. Tooele, Utah]: Tooele County Historical Society, 1986.
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Bureau of Mines Technology Transfer Seminar (1983 Charleston, W. Va.). Cabs and canopies for underground coal mining equipment: Proceedings. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1985.
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Feldstein, Albert L. Feldstein's historic coal mining and railroads of Allegany County, Maryland. [LaVale, Md.]: A.L. Feldstein, 1999.
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Timko, Stephen M. Appalachian coal mines and railroads in color. Scotch Plains, NJ: Morning Sun Books, Inc., 2012.
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Moreno, José Enrique González. El ferrocarril minero del Moncayo, de Castejón a Ólvega, y la mina Petra III. Gijón, Asturias: Ediciones Trea, 2006.
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Hunter, John. Death in the mountain. [Bath, England]: BBC Audiobooks Ltd., 2010.
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Park, Donald K. Powder River coal: A guide to facilities and operations. Fort Collins, Colo: PARKRAIL, 1990.
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Hemenway, Scott. Anthracite collieries and railroads of the Western Middle Field. Laurys Station, PA: Garrigues House, 2008.
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Slama, Dirk. „Digital Equipment Operator“. In The Digital Playbook, 83–90. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-88221-1_8.
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AbstractThe Digital Equipment Operator utilizes AIoT to optimize how they operate physical assets or equipment. Goals often include asset performance optimization and process improvements. Examples of Digital Equipment Operators include manufacturers, electricity grid operators, railroad operators, and mining companies. This chapter introduces the concept of the The Digital Equipment Operator in detail, again following the why, what, how structure from the Introduction (Fig. 8.1).
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Gonçalves, Marcelo Carneiro, Elpidio Oscar Benitez Nara, Isabel Martinski dos Santos, Isabela Boscardin Mateus und Lucas Montanari Bento do Amaral. „Comparative Analysis of Machine Learning Techniques via Data Mining in a Railroad Company“. In Proceedings of the 11th International Conference on Production Research – Americas, 655–64. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-36121-0_83.
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WASZKIS, HELMUT. „In praise of railroads“. In Mining in the Americas, 149–54. Elsevier, 1993. http://dx.doi.org/10.1016/b978-1-85573-131-8.50016-0.
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Gutfreund, Owen D. „Denver Meets the Automobile“. In Twentieth-Century Sprawl, Highways and the Reshaping of the American Landscape, 61–86. Oxford University PressNew York, NY, 2004. http://dx.doi.org/10.1093/oso/9780195141412.003.0003.
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Abstract Background At the end of the nineteenth century, Denver was an important regional center. It had grown from a mining town of less than five thousand residents in 1870 to a railroad hub with more than thirty-five thousand inhabitants in 1880, making it the largest settlement between Kansas City and the West Coast. Nine different railroads served the city, with lines extending eastward to Chicago, southward to Texas and New Mexico, and westward to the Pacific. Over the next decade Denver’s population tripled, surpassing one hundred thousand by 1890. Boosters and local politicians knew that Denver’s success would be short-lived if they failed to invest in the future. The cycle of boom and bust was all too familiar in nineteenth-century America, as Denver experienced firsthand when President Grover Cleveland repealed the Sherman Silver Purchase Act in 1893. In the resulting Silver Crash, 400 nearby mines closed, twelve local banks went under, and 50,000 Denver-area workers were unemployed.
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Leshy, John D. „More Giveaways Sow More Seeds of Discontent“. In Our Common Ground, 92–99. Yale University Press, 2022. http://dx.doi.org/10.12987/yale/9780300235784.003.0010.
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This chapter takes a look at further major instances of public land grants. While Congress was bestowing huge grants of public lands on the western railroads, it was also furnishing the legal basis for extracting minerals found on the public lands, particularly through the Mining Law of 1872. Railroads were the largest beneficiary, because coal was replacing wood as their primary fuel source. The chapter also considers two other important questions of public land policy—water and rights-of-way for canals and highways. Additionally, the chapter examines the period in the post-Civil War era generally known as the “Gilded Age.” During this time, many public land laws enacted in the first decades after the Civil War led to large businesses acquiring control of, and in many cases title to, vast amounts of public land, allowing them to wield much power over the lives of ordinary Americans.
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brio, allegro con. „Images at Work“. In Documentary, 31–82. Oxford University PressNew York, NY, 1993. http://dx.doi.org/10.1093/oso/9780195078985.003.0002.
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Abstract Robert J. Flaherty, in his early years, had no thought but to follow in the footsteps of his father, a mining engineer. The boy grew up around mining camps of northern Michigan and Canada, with miners and Indians as companions. Later the father became a prospector searching the Canadian wilderness for mineral resources-for United States Steel and other corporations. Sometimes he took young Bob with him on these explorations, traveling many weeks by canoe in summer and on snowshoes in winter, meeting Eskimos, mapping the country, learning arts of frontier survival. In 1910, at the age of twenty-six, young Robert Flaherty embarked on his own career as explorer and prospector. He was hired by Sir William Mackenzie, builder of Canadian railroads. Canada had decided on a railroad to carry wheat from its western lands to Hudson Bay, for shipment to Europe. Wheat-carrying trains and ships could also carry iron and other ores. What deposits were there in the Hudson Bay area? Young Flaherty was sent to prospect. Within a few short years, in four expeditions for Sir William Mackenzie, he won fame as an explorer, showed astounding resourcefulness and stamina, mapped unknown country, and brought back reports on mineral and pulpwood resources, as well as deposits of gypsum and lignite.
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Orford, Robert R., und Hamid Rehman. „Occupational Medicine“. In Mayo Clinic Preventive Medicine and Public Health Board Review, 219–29. Oxford University Press, 2010. http://dx.doi.org/10.1093/med/9780199743018.003.0014.
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Occupational medicine is the medical specialty devoted to 1) prevention and management of occupational injury, illness, and disability, and 2) promotion of health and productivity of workers, their families, and communities. Historically, occupational medicine was termed industrial medicine when heavy industry (eg, lumbering, automobile manufacturing, mining, railroads, steel manufacturing) employed physicians to provide acute medical and surgical care for workers. However, by 1945, medical programs had spread to business organizations that predominantly were staffed with clerical and service employees (eg, banks, insurance companies, mercantile establishments). The broader designation of occupational medicine then came into common use. Occupational medicine was recognized as a specialty by the American Board of Preventive Medicine in 1955.
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Edwards, Rebecca. „Redemption“. In Angels in the Machinery, 111–32. Oxford University PressNew York, NY, 1997. http://dx.doi.org/10.1093/oso/9780195116953.003.0007.
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Abstract The depression of 1893 was one of the worst economic crises ever to hit the United States. While it did not devastate financial markets as severely as the Great Depression would in 1929, the effect on industry was catastrophic. A quarter of the nation’s railroads went bankrupt. Production slumped in almost every manufacturing sector and ensuing layoffs were massive. Outside agriculture, which had its own problems, unemployment reached an estimated 2 million. Thousands of displaced workers sought charity in the cities, wandered the countryside, or starved from want. Some who kept their jobs fared only a little better, as wages in the textile and mining industries dropped more than 25 percent from levels that were already depressed. In real terms, American wages lost a fifth of their value in two years.
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Kenny, Kevin. „The Molly Maguires on Triol“. In Making Sense of the Molly Maguires, 213–44. Oxford University PressNew York, NY, 1998. http://dx.doi.org/10.1093/oso/9780195106640.003.0009.
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Abstract The trials of the Molly Maguires began in January 1876 and ended in August 1878. They bordered on a travesty of justice. The trials were conducted under conditions of enormously hostile publicity. The defendants were arrested by private policemen and convicted on the evidence of a detective who was accused of being an agent provocateur. The detective’s evidence was supplemented by a series of informers who turned state’s evidence. Irish Catholics were excluded from the juries as a matter of course. Most of the prosecuting attorneys worked for railroads and mining companies; the star prosecutor at the great showcase trials in Pottsville was none other than Franklin B. Gowen. As one historian has aptly put it: “The Molly Maguire investigation and trials marked one of the most astounding surrenders of sovereignty in American history. A private corporation initiated the investigation through a private detective agency, a private police force arrested the supposed offenders, and coal company attorneys prosecuted-the state provided only the courtroom and hangman.” Some of the men convicted in the Molly Maguire trials were probably innocent of the crimes they were charged with, though there is no way of knowing for certain at this point.Thomas Duffy,James Roarity, and Jack Kehoe, for example, surely ought not to have been convicted as charged.
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Walker, David. „Godbeites and the Capital of Dissent“. In Railroading Religion, 83–114. University of North Carolina Press, 2019. http://dx.doi.org/10.5149/northcarolina/9781469653204.003.0004.
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This chapter discusses William S. Godbe’s background and role in leading the Godbeites. Godbeites imagined a Mormon state of prosperity consisting of interrelated social, economic, political, and ecclesiastical efforts. Opponents of Brigham Young’s policies, Godbeites argued for economic, spiritual, and political liberalisms, which earned them excommunication and helped formed Mormon orthodoxy. For example, Brigham Young opposed the opening of mines, Godbeites insisted that mining was a necessary and a religious issue. Although the Godbeites hoped to be in the favour of government and industrial support, the Cullom Bill contained several provisions specifically designed to reverse railroad era Mormon initiatives.
Konferenzberichte zum Thema "Mining railroads"
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Albakay, Naji, Michael Hempel und Hamid Sharif. „Novel Insights for Railroad Maintenance Using Big Data Analytics“. In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6242.
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Train accidents can be attributed to human factors, equipment factors, track factors, signaling factors, and Miscellaneous factors. Not only have these accidents caused damages to railroad infrastructure and train equipment leading to excessive maintenance and repair costs, but some of these have also resulted in injuries and loss of lives. Big Data Analytics techniques can be utilized to provide insights into possible accident causes, thus resulting in improving railroad safety and reducing overall maintenance expenses as well as spotting trends and areas of operational improvements. We propose a comprehensive Big Data approach that provides novel insights into the causes of train accidents and find patterns that led to their occurrence. The approach utilizes a combination of Big Data algorithms to analyze a wide variety of data sources available to the railroads, and is being demonstrated using the FRA train accidents/incidents database to identify factors that highly contribute to accidents occurring over the past years. The most important contributing factors are then analyzed by means of association mining analysis to find relationships between the cause of accidents and other input variables. Applying our analysis approach to FRA accident report datasets we found that railroad accidents are correlating strongly with the track type, train type, and train area of operation. We utilize the proposed approach to identify patterns that would lead to occurrence of train accidents. The results obtained using the proposed algorithm are compatible with the ones obtained from manual descriptive analysis techniques.
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Williams, Trefor, John Betak und Bridgette Findley. „Text Mining Analysis of Railroad Accident Investigation Reports“. In 2016 Joint Rail Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/jrc2016-5757.
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The National Transportation Safety Board in the United States and the Transportation Safety Board of Canada publish reports about major railroad accidents. The text from these accident reports were analyzed using the text mining techniques of probabilistic topic modeling and k-means clustering to identify the recurring themes in major railroad accidents. The output from these analyses indicates that the railroad accidents can be successfully grouped into different topics. The output also suggests that recurring accident types are track defects, wheel defects, grade crossing accidents, and switching accidents. A major difference between the Canadian and U.S. reports is the finding that accidents related to bridges are found to be more prominent in the Canadian reports.
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Williams, Trefor, Christie Nelson und John Betak. „Applying Topic Modeling to Railroad Grade Crossing Accident Report Text“. In 2015 Joint Rail Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/jrc2015-5633.
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The FRA railroad grade crossing accident database contains text comment fields that may provide additional information about grade crossing accidents. New text mining algorithms provide the potential to automatically extract information from text that can enhance traditional numeric analyses. Topic modeling algorithms are statistical methods that analyze the words of original texts to automatically discover the themes that run through them. A frequently used topic-modeling algorithm is Latent Dirichlet Analysis (LDA). In this paper we will show several examples of how labeled LDA can be applied to the FRA grade crossing data to better understand categories of words and phrases that are associated with various types of grade crossing accidents.
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Williams, Trefor P., und John F. Betak. „Identifying Themes in Railroad Equipment Accidents Using Text Mining and Text Visualization“. In International Conference on Transportation and Development 2016. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784479926.049.
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Anderson, Justin S., und Jerry G. Rose. „In-Situ Test Measurement Techniques Within Railway Track Structures“. In IEEE/ASME/ASCE 2008 Joint Rail Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/jrc2008-63047.
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Recent changes in national transportation needs have placed increased burden on railroad infrastructure. To meet the increased demand for efficient freight transport, the railroad industry has increased traffic volume and maximized axle loadings. Increased axle loads have forced railroads to reevaluate existing infrastructure to ensure their ability to accommodate the additional traffic loads. It is imperative to design and maintain tracks such that they can withstand high volume and increasing axle loads over an extended service life, considering the track structure is the most significant capital expense for railroad companies. It has been desirable for years to develop non-intrusive procedures to directly measure pressures and stresses at various levels and interfaces in the railroad track structure in order to optimize track designs and improve subsequent track performance. Methods for measuring both pressures and deflections have been presented in recent research focusing on assessing the performance of trackbeds with increased track modulus, primarily through the addition of asphalt underlayment. These studies involve instrumenting HMA trackbeds with earth pressure cells and displacement transducers to measure pressure levels and distributions within the track structure and rail deflections under moving trains. Additional test methodologies have been developed to include pressure readings at interfaces like the rail/tieplate interface and the tieplate/tie interface using very thin pressure sensitive Tekscan sensors. The Tekscan Measurement System uses a piezoelectric film sensor composed of a matrix-based array of force sensitive cells, similar to mini strain gauges, to obtain accurate pressure distributions between two surfaces in the track. The procedure appears applicable for a wide variety of specific track related measurements to include: 1) analyzing pressure distribution patterns at the rail base/tie plate/tie interfaces to minimize wear and eliminate pressure points, 2) validating and optimizing horizontal curve geometric design criteria relative to superelevation, 3) assessing crossing diamond, other special trackwork, and bridge approach impact pressures, and 4) evaluating the advantages/disadvantages of various types of tie plates, fastenings, and tie compositions with the objective of equalizing pressure distributions over the interface areas. Results of testing are presented in detail for test installations on CSX Transportation heavy tonnage mainlines and at the Transportation Technology Center (Pueblo) low track modulus heavy tonnage test track.
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Macciotta, Renato, David Cruden, Derek Martin, Norbert Morgenstern und M. Petrov. „Spatial and temporal aspects of slope hazards along a railroad corridor in the Canadian Cordillera“. In 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1308_83_macciotta.
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Pouryousef, Hamed, Monique Stewart, Som P. Singh und Anand Prabhakaran. „A Mini-Network Simulation Approach to Investigate the Capacity and Safety Aspects of National Rail Network“. In 2021 Joint Rail Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/jrc2021-58525.
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Abstract Over the last decades there have been major technology advancements in the railroad industry to improve the operational safety as well as performance of freight trains in shared-use corridors. This study was focused on developing a methodology that allows evaluation of the impact of such advanced technologies over the safety and capacity aspects of the U.S. rail network using a benchmark mini-network simulation approach. A hypothetical mini-network of 5,000 miles of track with characteristics typical of the North American rail network was developed. Two hundred thirty two (232) daily trains, including a mix of intercity passenger, commuter, High Speed Rail and 78 freight trains, were used to simulate the traffic flow. Several network capacity and safety related parameters; network delay, network velocity, track utilization level, number of stops at stations, number of braking for route reservations, and number of stops at signals were analyzed in this study. The results of the benchmark network simulations were then extended to the U.S. rail network, using an analytical technique with assumptions for important parameters and impact factors such as total route miles, freight train-miles, number of sidings/yards, congestion level and age of fleets. The results indicate that the methodology is able to quantify the improvement in network capacity and safety features that can be obtained when advanced technologies are deployed on freight trains.
Berichte der Organisationen zum Thema "Mining railroads"
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Good Practice in Environment, Health and Safety in Latin America and the Caribbean. Inter-American Development Bank, Januar 2016. http://dx.doi.org/10.18235/0009273.
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This Technical Note is primarily intended for use by Chinese investors and EPC firms, specifically senior management and decision makers responsible for the planning, design and delivery of the EHS strategy and safeguards when operating in LAC. It may also be used as a reference for LAC governments and companies. The Technical Note focuses primarily on mining, oil and gas (i.e. extractive), infrastructure and agriculture activities as key sectors; although there is recognition that large projects may involve associated facilities such as roads, railroads, dams or transmission lines. Regional context and regulations are focused on three countries, Brazil, Mexico, and Peru, given the growing Chinese investments in these countries and the advancements of their EHS regulations. The Technical Note is practical and generic in order to be applicable to the construction of various project types throughout LAC. Case studies for specific projects and industries can be found in Appendix A.