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Based on the decline in exploitation of coal resources, steep coal seam mining and mining face tensions continue to explore the feasibility analysis of steeply ...
Based on the decline in exploitation of coal resources, steep coal seam mining and mining face tensions continue to explore the feasibility analysis of steeply ...
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Abstract A strategic inquiry into underground coal mining in New South Wales, Australia, identified the need for nonmarket valuation studies and recommended ...
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Analysis Of National Coalmining Accident data In China, 2001–2008 As part of this move, local governments are assigning people to supervise the work safety of ...
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Highlights • The real volume of coal sales – elements of rationalising production. • The number of employees working underground in Polish coal mining companies.
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