Books by John A. Johnson:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Johnson, John A. (John Albert), 1896-: Relative advantages and disadvantages of different types of stemming and no stemming when used with 40 percent ammonia gelatin dynamite at the Mount Weather testing adit (U.S. Dept. of the Interior, Bureau of Mines, 1943), also by Wing G. Agnew (page images at HathiTrust)- Johnson, John A. (John Albert), 1896-: Stemming in metal mines. Progress report 1 (U.S. Dept. of the Interior, Bureau of Mines, 1940), also by McHenry Mosier and Wing G. Agnew (page images at HathiTrust)
- Johnson, John A. (John Albert), 1896-: Transportation of iron ore, open-cut mines, Lake Superior district (U.S. Dept. of the Interior, Bureau of Mines, 1948), also by Frank E. Cash and United States Bureau of Mines (page images at HathiTrust)
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