Results: 1 - 3 of 3
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 …
Aug 31, 1997
Open File Report
… are greater than the collective reserves of all known conventional …
Nov 27, 1967
Open File Report
… complex. With the depletion of reserves from these two horizons, …