Report discussing the regional geology, geomorphology, structure, mineral deposits, and details of the sedimentary and igneous rocks of the Placerville Quadrangle in Colorado.

A report regarding the areal geology of the Placerville Quadrangle, located in colorado. This report concerns work done on behalf of the division of Raw Materials of the U.S. Atomic Energy Commission.

This baseline risk assessment of ground water contamination at the uranium mill tailings sites near Slick Rock, Colorado, evaluates potential public health and environmental impacts resulting from ground water contamination at the former North Continent (NC) and Union Carbide (UC) uranium mill processing sites. The tailings at these sites will be placed in a disposal cell at the proposed Burro Canyon, Colorado, site. The US Department of Energy (DOE) anticipates the start of the first phase remedial action by the spring of 1995 under the direction of the DOE`s Uranium Mill Tailings Remedial Action (UMTRA) Project. The second phase of the UMTRA Project will evaluate ground water contamination. This baseline risk assessment is the first site-specific document for these sites under the Ground Water Project. It will help determine the compliance strategy for contaminated ground water at the site. In addition, surface water and sediment are qualitatively evaluated in this report.

Report discussing an exploratory drilling program in the Charles T. area and vicinity during the period from November 1947 and September 1949. "The purpose of the exploration was to discover new carnotite deposits to support milling operations on the Colorado Plateau, and to appraise the uranium and vanadium resources of the area explored."

From abstract: The Legin group area comprises five privately owned claims, nine Government claims, and some public land. The area is in parts of secs. 28 and 29, T. 43 N., R. 19 W., New Mexico principal meridian, San Miguel County, Colo. It is about 45 miles from the Government mill at Monticello, Utah, and 50 miles from the Vanadium Corporation of America mill at Naturita, Colo. The Legin group area has yielded a total production of more than 18,000 short tons of carnotite ore that averaged 0.32 percent U30 and 2.5 percent V 205 . Most of this production was accomplished during the years from 1935 to 1944, and from 1949 to October 1951.

Report discussing the geography and ores of the Spud patch area, which acted as a source of carnotite ore from deposits in a sandstone lens.

Report discussing the exploration of the Upper group area in San Miguel County, Colorado, and the investigation of carnotite ores produced from this area.

A report regarding carnotite resources of the upper group area in San Miguel County, Colorado

Report discussing the contact and weathering of the Burro Canyon formation shales and Dakota sandstone as well as other connections of the Burro Canyon formation.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train across trestle on Lizard Head Pass route, near Gallagher, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train across trestle on Lizard Head Pass route, near Gallagher, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, rear view of Rocky Mountain Railroad Club excursion train on RGS trackage, above Gallagher, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train on RGS trackage, Lizard Pass, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train on RGS trackage, Lizard Pass, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train on RGS trackage, going downgrade near Trout Lake, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train on RGS trackage, taking on water at Trout Lake, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train on RGS trackage, moving downgrade at Trout Lake, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 319, 2-8-0 narrow gauge, pulling Rocky Mountain Railroad Club excursion train stopped at station in Ophir, CO.

A photograph postcard showing the Denver & Rio Grande Western (DRGW) 462, 2-8-2 narrow gauge, with a string of stock cars, crossing a trestle on the Rio Grande Southern route, near Brown, CO, 13 cars, 15 mph.

A photograph print showing the Denver & Rio Grande Western (DRGW) 464, 2-8-2 narrow gauges, leased to Rio Grande Southern, on high trestle at Ophir, CO, photo taken from track above.

A report regarding development drilling in the Ellison-Burro claims area, Slick Rock District, San Miguel County, Colorado

Report outlining development drilling in the Hawkeye Claim Area Slick Rock District, San Miguel County, Colorado, including the geology, ownership, location, and plans for future drilling. Maps of the development drilling area and a summary of assay data, in tabulated form, are also included.

A report regarding development drilling in the Hawkeye claim area, Slick Rock District, San Miguel County, Colorado

Report discussing development drilling on the contact no. 4 claim, Gypsum Vall District, San Miguel County, Colorado