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1
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Material Type: Artigo
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How used machinery helps get production started on large coal-mining projects
Alexander, G.T.
World Coal; (United States), 1978-03, Vol.4:3
United States
Sem texto completo
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2
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Material Type: Artigo
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Review of reverse circulation big hole drilling methods. [11 refs]
Allen, J.H.
World Coal; (United States), 1977-02, Vol.3:2
United States
Sem texto completo
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3
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Material Type: Artigo
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How to winterize your mining equipment
Alm, B.
World Coal; (United States), 1980-12, Vol.6:12
United States
Sem texto completo
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4
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Material Type: Artigo
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Evaluation of the energy potential of carbonaceous sediments
Alpern, B.
World Coal; (United States), 1977-03, Vol.3:3
United States
Sem texto completo
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5
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Material Type: Artigo
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Australia, the world's third-largest coal exporting nation
Anthony, J.D.
World Coal; (United States), 1978-07, Vol.4:7
United States
Sem texto completo
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6
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Material Type: Artigo
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Horizontal drilling techniques can offer substantial cost savings
Archibald, J.C. Jr
World Coal; (United States), 1978-03, Vol.4:3
United States
Sem texto completo
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7
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Material Type: Artigo
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China encourages foreign investment
Argall, G.O.
World Coal; (United States), 1983-06, Vol.9:3
United States
Sem texto completo
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8
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Material Type: Artigo
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IVth international coal exploration symposium
Argall, G.O. Jr
World Coal; (United States), 1983-04, Vol.9:2
United States
Sem texto completo
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9
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Material Type: Artigo
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Australia is host to coal exploration symposium
Argall, G.O. Jr
World Coal; (United States), 1983-08, Vol.9:4
United States
Sem texto completo
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10
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Material Type: Artigo
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Latest trends in seismic coal field exploration
Arnetzl, H.H.
World Coal; (United States), 1983-04, Vol.9:2
United States
Sem texto completo
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