Comparison of the Triangular, Polygonal, and A Statistical Method of Computing Grade and Tonnage of Ore For the Silver Bell Oxide Porphyry Copper Deposit.
Contributors: Hewlett, R.
Series: Report of investigations (United States. Bureau of Mines) -- 7331
Publisher: s.n
Published: 1970
Place of publication: S.l
Language: eng
Notes: 1