Fuld, H.A., 1910, Prospecting with churn drills at Miami, Arizona: Engineering and Mining Journal, v. 90, no. 17, October 22, 1910, p. 804-805.
Fuld, H.A.
Engineering and Mining Journal, v. 90, no. 17, October 22, 1910, p. 804-805.
Mineral District, Mining Engineering, Exploration, Subsurface,
