“…--The Mount Pleasant coal field, which is on the western side of the Wasatch Plateau, is favorably located with respect to the western steel industry, and for this reason it has been carefully investigated as a source of coking coal. The area was mapped by the U. S. Geological Survey in 1942 (Duncan, 1944), and an exploratory diamond-drill hole was sunk by the U. S. Bureau of Mines to obtain samples for analysis (Toenges and Turnbull, 1943).…”