Results: 1 - 2 of 2
Dec 31, 1973
Earth Sciences Report
… … The coal resources of the Hussar-Hanna … at 2-mile intervals. Strippable coal (within 100 feet of surface) … tons of economically recoverable coal. Two useful marker beds are …
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 …