Open AccessDesign optimization in underground coal systems. Interim report, October--December 1976. [31 refs]
Author(s) -
J. Lucas
Publication year - 1977
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - Slovenian
Resource type - Reports
DOI - 10.2172/7297017
Subject(s) - longwall mining , overburden , coal mining , mining engineering , pillar , surface mining , roof , coal , geology , extraction (chemistry) , hard coal , engineering , civil engineering , waste management , chemistry , structural engineering , chromatography
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