"Baker [County] area mines - Highland Gold Mine Co. - Knapp Group - Sumpter, Or. Maps - circa 1901-1903" "Property of the Highland Gold Mines Co.- Knapp Group - Sumpter, Oregon - Granite, Grano-Diorite, Argillite - U.S. Deputy Mineral Surveyors"
"4/21/1983 - Mine Safety, Body Sling to Immobilize Neck - In sling: Art Clum, EWU. Wearing eyeglasses: Jay Hart, Belvue [Bellevue?] MSHA [Mine Safety & Health Administration]. EOSC: Dan Geary." - six images