Results 151 to 160 of about 370,321 (357)
Coal supply for California [PDF]
The potential sources and qualities of coals available for major utility and industrial consumers in California are examined and analyzed with respect to those factors that would affect the reliability of supplies.
Yancik, J. J.
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Technology Diffusion in the Coal Mining Industry of the USSR: An Interim Assessment [PDF]
, 1989 Over many years IIASA has been involved in energy studies, coal was always an important research topic at all levels from resource assessment, study of potential future coal supply to the analysis of environmental impacts resulting from expanded coal ...
Astakhov, A., Grubler, A., Mookhin, A.
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Deep Underground Science and Engineering, EarlyView.A novel shear‐lag model, validated by pull‐out tests, incorporates a constant bond stress stage to predict the complete load–displacement response of grouted rock bolts, providing a new tool for optimizing anchorage length and material toughness in deep underground engineering. Abstract The stability of rock masses in deep underground excavations, such
Wenhui Bian +6 more
wiley +1 more source
THE EFFECTS OF THE MINING ACTIVITY OVER THE WATERS FROM JIU VALLEY [PDF]
The upper Jiu Valley, around Petrosani and Lupeni, is Romania�s principal coal mining region. Many miners feel that coal mining in Romania is a moribund industry that will never regain its position of significance. Environmental contaminants associated
Cristina BARBU
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OPTIMIZATION OF INVESTMENT FOR COAL MINES BASED ON NEURAL NETWORK MODEL [PDF]
, 2018 The main objective of the paper is to develop a system of economic and mathematical models for managing the investment activity of the coal mining enterprise, including improving the principles and methods for analyzing the profitability ...
CHURIKANOVA, Olena +5 more
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.The study developed a PVDF/SiO2 humidity sensor with superhydrophobic properties and integrated the humidity sensor into the intelligent powered air‐purifying respirator (IPAPR) for breath monitoring. Coupled with the Gated Recurrent Unit (GRU) machine learning prediction algorithm, it enables feedforward control of the fan to achieve respiratory ...
Xinjian He +9 more
wiley +1 more source
Productivity Trends in the Coal Mining Industry in Canada [PDF]
The purpose of this report is to uncover the factors behind what has been a very strong productivity performance from the coal mining industry in Canada over the past four decades.
Jeremy Smith
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Analisis Hukum Mengenai Penjatuhan Sanksi Pidana Terhadap Pelaku USAha Pertambangan Tanpa Tanah Tanpa Izin USAha Pertambangan Di Kabupaten Deli Serdang [PDF]
, 2017 The definition of mining according of the Law No.4/2009 Article I Paragraph I regarding mineral and coal mining is “part of or all of activity stages in terms of mineral and coal research, management, and business including general investigation ...
Ablisar, M. (Madiasa) +3 more
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Environmental Policy and Governance, EarlyView.ABSTRACT This paper investigates how governance structures and policy approaches influence transition pathways in three major oil and gas producing regions: Esbjerg (Denmark), Taranaki (New Zealand), and Aberdeen (Scotland). The methods employ a comparative case study framework and draw on a literature review, document analysis and interviews with key ...
Sophie Kiernan, Tamara Krawchenko
wiley +1 more source
One hundred years of coal mining in the San Juan Basin, New Mexico [PDF]
, 1988 H. B. Nickelson
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