Application of grade and tonnage deposit models
Subtitle: the search for ore deposits possibly amenable to small-scale mining
By: by James D. Bliss, G.E. McKelvey, and Michael S. Allen.
Contributors: McKelvey, G. E.; Allen, Michael S.; Geological Survey (U.S.)
Series: Open-file report -- 90-412.; U.S. Geological Survey open-file report -- 90-412.
Publisher: U.S. Geological Survey
Published: 1990
Place of publication: [Menlo Park, CA]
Language: eng
Format: Microform
Number of pages: 24
Subjects: Mines and mineral resources.; Ore deposits.
Notes: Distributed to depository libraries in microfiche.

Includes bibliographical references (p. 7-10).

Microfiche. [Denver, Colo. : U.S. Geological Survey, 1992] 1 microfiche.