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roy d merritt
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Coal exploration, mine planning, and development
Roy D. Merritt · Noyes Publications
464 sayfa · 1986
Coal mines and mining / Mineral industries / Prospecting
Coal overburden
Roy D. Merritt · Noyes Data Corp.
343 sayfa · 1983
Coal / Coal mine waste / Coal mines and mining / Environmental aspects / Environmental aspects of Coal mines and mining
Coal resources of the Susitna lowland, Alaska
Roy D. Merritt · State of Alaska, Dept. of Natural Resources, Division of Geological and Geophysical Surveys
181 sayfa · 1990
Coal