The underground geology of the western part of the Tonopah mining district, Nevada, by Thomas B. Nolan, 1930.

A discussion of previous geologic work, summary of the present investigation, seven geologic formations, folding and faulting, and orebodies.

Prepared in cooperation with the USGS; originally published as University of Nevada Bulletin, v. 24, no. 4, August 1, 1930; for further discussion of the underground geology see B23; for description of surface geology see B92; for a geochemical discussion of the area see B96; regional overviews are in B99A and B99B.

Bulletin 9, 36 pages (photocopied), 1 b/w drawing, 1 plate--l=400 feet, block diagram, 21x31", full color,, $20.00