Vandenberge, J.H.2024-03-142024-03-1410.15786/13688461https://wyoscholar.uwyo.edu/handle/internal/8218https://doi.org/10.15786/13688461Independent engineer’s report on the properties of the Penn-Wyoming Copper Company and the Grand Encampment copper mining district located in the county of Carbon, State of Wyominghttps://creativecommons.org/licenses/by/4.0/figure