Metal-mining practice
By: by Chas. F. Jackson and J. H. Hedges.
Contributors: Hedges, Joseph Harold, 1882- joint author.
Series: United States. Bureau of mines. Bulletin 419
Publisher: U.S. Govt. print. off.
Published: 1939
Place of publication: Washington
Language: eng
Number of pages: 512
Subjects: Mining engineering.
Notes: Bibliographical foot-notes.
At head of title: United States Department of the interior. Harold L. Ickes, secretary. Bureau of mines. John W. Finch, director.
Summarizes, consolidates and analyzes information on mining methods, practices and costs in a large number of metal mines in the United States and foreign countries published 1928-1938 by the U.S. Bureau of mines and in the technical press. cf. p. 1-2.
"Although the exploitation of deposits of metalliferous ores cannot be discussed comprehensively without considering milling and marketing of the ores, this bulletin is concerned principally with mining or ore production."--p.2.