Hausel, W.D.Ayers, W.B.2024-03-142024-03-1410.15786/13696627https://wyoscholar.uwyo.edu/handle/internal/9418https://doi.org/10.15786/13696627Assay report on selected dump samples from the Portland Mine, Sierra Madre, Wyominghttps://creativecommons.org/licenses/by/4.0/WyomingWSGSGeologyfigure