Now showing items 1-20 of 643

        Title
        1918-1919 Liberty Bell Gold Mining Company : Annual report and statement of accounts [1]
        A detailed record of the smelting results obtained from the treatment of two lots, one of Iron Silver and one of Small Hopes zinc ores at the test works of the International Metallurgical Co., Denver, Colorado [1]
        A geologic report of the Douglas Creek phosphate area : Granite County, Montana [1]
        A geological study with historical notes of Creede Mines, Inc. [1]
        A modern sampling, milling and reduction plant at Salida, Colorado [1]
        A preliminary report on the property of the Puritan Mining Co., Clear Creek County, Colo. [1]
        A report concerning the Ten Broeck Mine, Chaffee County, Colorado [1]
        A report on a sample of tailings from the Prince Albert Mine, Central Mining District, Boulder County, Colorado [1]
        A report on Group no. 2 of the Almaden Mines Co. [1]
        A report on the Black Bear Group of mines, Clear Creek County, Colo. [1]
        A report on the Breckenridge group, Empire, Clear Creek County, Colo. [1]
        A report on the Dominguez Cement Shales [1]
        A report on the East Lake Mine of the Quick Pay Gold Mines Co., Clear Creek, Colo. [1]
        A report on the feasibility of establishing a mica-feldspar business in Denver [1]
        A report on the Little Negro claim, Lake County, Colo. [1]
        A report on the oil prospects of the Denver Basin [1]
        A report on the property of the White Hills Mining Company at White Hills, Mohave County, Arizona [1]
        A report on the property of Tiger Lily Mining and Milling Co. Granite, Colo. [1]
        A report on the treatment of ore from the property of the Diamond Tunnel Mining and Milling Co., Silver Plume, Colo. [1]
        A review of ore related to the Madonna and Mayflower faults, Madonna Mine, Chaffee County, Colo. [1]