Design optimization in underground coal systems. Interim report, January--March 1976. [Longwall method]
Author(s) -
J. Lucas
Publication year - 1976
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - Slovenian
Resource type - Reports
DOI - 10.2172/7158420
Subject(s) - roof , longwall mining , coal mining , overburden , coal , mining engineering , interim , engineering , underground mining (soft rock) , civil engineering , waste management , archaeology , history
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