Results 51 to 60 of about 1,012,080 (297)
Determination of the suitable height at sublevel caving methods [PDF]
Acta Montanistica Slovaca, 1998 The paper in a short form deals with theoretical aspects of the sublevel-caving methods on iron deposits Niná Slaná and Kobeliarovo. This mining method in a stope-block use the LHD system mechanization by the all underground caving stoping technology ...
Bauer Viliam
doaj
Open pit or block caving? A numerical ranking method for selection [PDF]
, 2014 Mining in the 21st century is facing many challenges, among which are low-grade and high tonnage orebodies. One great (r)evolution in mining occurred in the early 20th century when Daniel Jackling proposed the concept of economies of scale for large ...
Suorineni, Asi, Rashidi Nejad, F
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Applied Economic Perspectives and Policy, EarlyView.ABSTRACT We conducted two framed field economic experiments with citrus farmers in Florida, United States and soybean farmers in Argentina to investigate their willingness to coordinate pest and weed management efforts. Despite the contrast between these two agricultural contexts, we find striking behavioral commonalities.
Ariel Singerman, Sergio H. Lence
wiley +1 more source
Firm turnover under asymmetric information: Tanzania's agro‐dealer sector
American Journal of Agricultural Economics, EarlyView.Abstract We study firm turnover (i.e., entry and exit) and its consumer implications in a market characterized by asymmetric information. Using a three‐round census of agro‐dealers in Tanzania's Morogoro Region, we document annual firm entry and exit rates of 33% and 17%, respectively.
Alix Naugler +3 more
wiley +1 more source
Forecasting vulnerability of deep extraction level excavations to draw-induced cave loads
Journal of Rock Mechanics and Geotechnical Engineering, 2019 Block and panel caving methods are increasingly used for mining of large and strong orebodies at large depths below the ground surface (>1 km). This paper focuses on the production phase of caving when the extraction level is fully developed and ...
Matthew E. Pierce
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Research progress on intelligent coal caving theory and technology
Gong-kuang zidonghuaThe longwall top-coal caving technology is an effective method for extracting thick and ultra-thick coal seams, and it has become a hallmark technology in China's coal mining industry.
WANG Jiachen +4 more
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Evaluation of effective geomechanical parameters in rock mass cavability using different intelligent techniques [PDF]
International Journal of Mining and Geo-EngineeringThe paper presents the results of a comprehensive investigation of the applicability of various intelligence methods for optimal prediction of rock mass caveability in block caving by using effective geomechanical parameters.
Behnam Alipenhani +2 more
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DETERMINATION OF THE SURFACE COLLAPSE PROCESS PHASE CAUSED BY BLOCK CAVING MINING
Известия Томского политехнического университета: Инжиниринг георесурсов, 2020 The relevance of the research. Waste rock dumping in the area of the surface collapse caused by the underground mining is one of the rational methods of dumping. It contributes to saving land resources and reducing the transport path of overburden.
Evgeniy Yu. Efremov, Dmitriy V. Dorokhov
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Exceptional preservation informs the paleobiology of tapinocephalid dinocephalians
The Anatomical Record, EarlyView.Abstract The tapinocephalid dinocephalian Moschops is one of the most iconic taxa of the middle Permian, yet its paleobiology remains one of the least well‐known. Here, we address some aspects of paleoneurology and paleobiology of Moschops using CT scanning of four well preserved skulls from the upper Abrahamskraal Formation of South Africa. Two of the
Julien Benoit +6 more
wiley +1 more source
ADOPTION OF SPACE LASER BEAM ROCK ANALYSIS TECHNOLOGY FOR TERRESTRIAL MINING APPLICATIONS WITH A FOCUS ON BLOCK CAVING MINING SYSTEMS: CONCEPTUAL DEVELOPMENT [PDF]
, 2022 The block caving mining system is the most economical underground mining system known today, and its popularity in the mining industry continues to increase. The block caving mining system can be described as the preferred mining system of the future, as
Sadyrbayev, Bakytzhan
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