Investigation of the Union zinc-lead mine, Washoe County, Nev. /
by Robert W. Geehan.
|Main Author:||Geehan, Robert W.|
[Washington, D.C.] : U.S. Dept. of the Interior, Bureau of Mines, 1950.
Mine examination /
Mine examination / Nevada /
Lead mines and mining > Lead mines and mining / Nevada > Lead mines and mining / Nevada / Washoe County.
Zinc mines and mining > Zinc mines and mining / Nevada > Zinc mines and mining / Nevada / Washoe County.
10 p., 18 leaves of plates :
ill., map ;
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