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More about J. J. Shields:
| | Books by J. J. Shields: Books in the extended shelves: Shields, J. J.: Face haulage (U.S. Dept. of the Interior, Bureau of Mines, 1960), also by J. J. Dowd (page images at HathiTrust) Shields, J. J.: Longwall mining in bituminous coal mines with planers, shearer- loaders, and self-advancing hydraulic roof supports (U.S. Dept. of the Interior, Bureau of Mines, 1967) (page images at HathiTrust) Shields, J. J.: Methods and equipment used in underground development (U.S. Dept. of the Interior, Bureau of Mines, 1957), also by W. A. Haley, J. J. Dowd, and United States Bureau of Mines (page images at HathiTrust) Shields, J. J.: Methods of mining with continuous-mining machines (U.S. Dept. of the Interior, Bureau of Mines, 1954), also by J. J. Dowd, W. A. Haley, M. O. Magnuson, and United States Bureau of Mines (page images at HathiTrust)
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