Results: 1 - 3 of 3
Dec 31, 1966
Earth Sciences Report
… report discusses Ardley zone coal resources in the central Red … the zone, and also a number of coal deposits that have received … 4 units: a coaly shale; an upper coal seam 4 to 6 feet thick with a …
Feb 28, 1993
Open File Report
… development as a result of coal mining, oil and natural gas …
Dec 31, 1977
Earth Sciences Report
… in thick sandstone units and coal beds. Yields between 25 and …