A report about the known facts about the minerals that make up the rocks, soils, and ore deposits of Colorado.

Report issued by the Bureau of Mines over heavy sandstone deposits in the Four-State area of the U.S. Details of the geology and an estimate of resources are presented. This report includes tables, maps, and illustrations.

Report issued by the Bureau of Mines over the Iron Mountain magnetite deposits. As stated in the introduction, "magnetic, gravity, and geologic surveys were made to permit an estimate of the extent and magnitude of the Iron Mountain, Colorado, titaniferous magnetite deposit" (p. 1). This report includes tables, maps, and illustrations.

From introduction: The greatest known potential oil resource in the world occurs in the oil shale of the Green River formation, and the richest and thickest deposits occur within the area of this report. The purpose of this investigation was to obtain data on the stratigraphic distribution and areal extent of the oil-shale beds and to estimate the potential oil resources in the area.

Letter from Isaac Herbert Kempner to Thomas Leroy James discussing fig gift packages.

"A summary of the first 100 years of published knowledge, including the chief occurrences of 445 mineral species."

Script from the WBAP-TV/NBC station in Fort Worth, Texas, covering a news story about the Jaycees Christmas tree for Burnett park, although this year the tree is from East Texas rather than Colorado as the past six years. The attempt to get a tree from Colorado included a snowfall of 2 1/2 feet preventing bring the tree out, a jackknifed and wrecked truck, a major injury, and thousands of dollars cost. The new tree was much easier to bring to Fort Worth.

Discussing the geologic setting of the Foothills Mine, Idledale District, Jefferson County, Colorado

Report issued by the U.S. Bureau of Mines discussing uranium mining costs and methods on the Colorado Plateau. Costs of labor, transportation, and explosives, as well as mining methods and practices used, are presented. This report includes maps, tables, illustrations, and photographs.

Report issued by the U.S. Bureau of Mines discussing sinking and excavation of large-diameter access shafts. As stated in the introduction, "this information circular describes the application of modern methods and equipment in sinking a vertical, 916-foot-deep by 16-foot-diameter, concrete-lined access shaft for the Harold D. Roberts tunnel near Montezuma, Colo." (p. 1). This report includes maps, tables, illustrations, and photographs.