The underground geology of the Tonopah mining district, Nevada, by Thomas B. Nolan, 1935.

Previous geologic work, Tertiary geologic history of the district, seven geologic formations, faulting, and orebodies.

Prepared in cooperation with the USGS; originally published as University of Nevada Bulletin, v. 29, no. 5, September 1, 1935; supplements the underground geology information of B9; for description of surface geology see B92; for geochemical discussion of the area see B96.

Bulletin 23, 51 pages (photocopied), 1 b/w drawing, 3 plates: plate 1, 1"=400', block diagram, 21x31", full color; plate 2, 1"=400', block diagram, 19x26", full color; plate 3, 1"=1000', contours of ore zone with claims, 2 color, , $26.00