BASIC ESTIMATED CAPITAL INVESTMENT AND OPERATING COSTS FOR UNDERGROUND BITUMINOUS COAL MINES UTILIZING A CONTINUOUS MINING SYSTEM Mines With Annual Production of 1.188 and 2.376 MMtpy ROM From a 72-Inch Coalbed

摘要

This study, prepared by the Process Evaluation Office, Division of Systems Engineering, Fossil Energy, estimates typical capital investments, operating costs, and selling prices for underground bituminous coal mines utilizing continuous miners and sized for annual production rates of 1.188 and 2.376 million tons ROM (run-of-mine). Wages and union welfare payments are those that went into effect under the National Bituminous Coal Wage Agreement of 1978, effective March 27, 1978. Costs of materials and equipment are based on first quarter 1978 indexes. It is assumed that the mines have a 20-year life. Selling prices were determined for each mine— one based on 12-, 15-, and 20-percent returns on equity and the other based on the same returns with a debt-equity split of 1:2.