TY - BOOK ED - United States. TI - Bureau of Mines cost estimating system handbook T2 - Information circular / United States Department of the Interior, Bureau of Mines AV - TN295TN274 .U4 no. 9142-9143 U1 - 622 s338.2/319 PY - 1987/// CY - Avondale, Md. PB - U.S. Dept. of the Interior, Bureau of Mines KW - Mining engineering KW - Costs N1 - 1. Surface and underground mining -- 2. Mineral Processing ER -