Capital and operating cost estimating system manual for mining and beneficiation of metallic and nonmetallic minerals except fossil fuels in the United States and Canada / 
by George K. Clement, Jr. ... [et al.]. 
 - [Pitsbourgh, PA.]:  Bureau of Mines, United Statea Department of the Interior,  1980. 
 - ix, 149 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineral industries--Costs.--United States<br/>Mineral industries--Costs.--Canada