Slight, but definite, improvement noted; decline of bituminous coal stocks; by-product and beehive coke, electric utilities, steam railroad, and steel plant consumption increases; increase in underground mechanical loading; trade practices and ethics.
The bituminous coal industry, in 1929
Min. Congress Jl
Mining Congress Journal ; 16 , n 2
1930
Aufsatz (Zeitschrift)
Englisch
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