Bureau of Mines cost estimating system handbook.

Year:	1987
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
Series:	Information circular / Bureau of Mines ;
Report Number:	9142
Subject:	Mining engineering--Costs
Link:	https://hdl.handle.net/2027/mdp.39015078470310