A roof collapse deep inside a coal mine that killed three men was caused by a large slip in the rock strata that is difficult to detect with sounding devices, a state mining official confirmed ...
GOLDEN, COLORADO and EDMONTON, ALBERTA--(Marketwire - Aug. 27, 2012) - The directors and management of Strata-X Ltd ("Strata-X" or the "Company") (TSX VENTURE:SXE.V - News) are pleased to provide the ...
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