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The National Coal Board has developed a process for converting coal into distillable liquids based on the extraction by supercritical fluids of fragments of coal ...
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An equipment for shortwall mining useful for extraction of pillars in underground coal mines, which comprises a series of self advancing powered supports (1) being ...
Website for the mining industry. Current projects, equipment and services guide, events listing, associations directory, and other minerals engineering resources.
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Underground Mining Equipment Market By Application (Coal Mining, Metal Mining and Minerals Mining), By Mining Method (Longwall Extraction and Room and Pillar ...
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Two new projects will be financed by the department The U. S. Department of Energy (DOE) will finance the studying of rare earth extraction from coal, reports Energy.
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