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<br />R. G. OTTO & ASSOCIATES <br /> <br />1. INTRODUCTION <br />The Schwartzwalder Mine is a uranium mine and ore-sorting facility <br />currently operated by the Cotter Corporation, Lakewood Colorado. <br />The Mine is located approximately ten miles northwest of Golden <br />Colorado in the southeast quadrant of Section 25, Township 25, <br />Range 71W (USGS 7 1/2 minute Quadrangle- "Ralston Buttes", Figure <br />1). Entrance to the Mine is oa the west slope of a aa:rrow canyon <br />which is the drainage for a small, intermittent stream known as <br />Ralston Creek. <br />The property was discovered by Mr. Fred Schwartzwalder in 1999. <br />"'; The first shipment of ore was made in 1952 and the Mine has <br />.~•,.:. <br />v;., <br />operated on a more-or-less continuous basis ever since. The <br />property was purchased from Mr. Schwartzwalder by Denver-Golden <br />Oil & Uranium Company in 1959 and ownership transferred to Cotter <br />Corporation in 1966. <br />The Schwartzwalder Mine has been developed through a succession of <br />edits driven to crosscut the veins of pitchblende iFiqure 2). The <br />ore is taken to the surface where it is separated from other, <br />noncommercial materials (waste rock- and trucked off site to a <br />milling facility. Local topography is such that only limited <br />space is available for the convenient disposal of the <br />noncommercial materials. <br />~:.1 <br />1 <br />