Results: 1 - 5 of 5
Sep 30, 1963
Information Series
… Board's estimate of the reserves that they contain. The … 300 and 2600 feet of overburden. Reserves have been estimated for … basis of the magnitude of the reserves and the adequacy of the …
Dec 31, 1975
Earth Sciences Report
… Group strata contain the largest reserves, with 628,000 million tons …
Dec 31, 1967
Bulletin
… flow. The natural basin (dynamic reserves) is estimated to be 1.35 …
Dec 31, 1975
Open File Report
… horizon. Horseshoe Canyon coal reserves between the depths of 300 …
Dec 31, 1989
Open File Report
… area contains coal resources and reserves in the following …