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The Tamarack, Osceola, Tamarack Junior & Kearsarge mines- The Tamarack Mining Company was incorporated in 1882 and is opened on the underlay of the Calumet conglomerate reef, (on a tract west of land held by Calumet and Hecla) and to some extent upon the Osceola amygdaloid as well, the latter being opened by means of crosscuts run east from the openings on the conglomerate. 5 shafts were sunk...