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Sinking large-diameter drill holes, Lake Superior district underground iron mines
- Author / Creator
- Available as
- Physical
Details
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- Creator
- by Ernest W. Johnson and Frank E. Cash
- Format
- Books
- Language
- English
- Contributors
- Publication
-
- [Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, [1946]
- Physical Details
-
- 21 pages, 10 unnumbered leaves of plates : illustrations ; 27 cm
- OCLC
- ocm33467175
- Cover title.
- "February 1946."
- Includes bibliographical references.