Registrant was incorporated under the laws of the State of California on July 12, 1922, under the name of California Copper Corporation, as a holding company for the shares of its operating company, Engels Copper Mining Company which was incorporated under the laws of the State of California on June 19, 1901. Engels Copper Mining Company was merged into California Copper Corporation on March 3, 1936, and the name of the merged company was changed to California- Engels Mining Company. Exploration and development commenced at the Engels Mine, Lights Creek Mining District, Plumas County, California, upon organization of Engels Copper Mining Company; but it was not until 1914 that milling...