Mining Methods and Costs at the Piokee Mining Unit and the Piokee Experimental Mining Project, the Eagle-Pitcher co. (Tri-State Mines), Ottawa County, Okla.
Contributors: Elizondo, J.
Series: Information circular (United States. Bureau of Mines) -- 7930
Publisher: s.n
Published: 1960
Place of publication: S.l
Language: eng
Notes: 1