IS-45 Active Permitted Mine Operations in Colorado, 1996-97

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SKU: IS-45D Categories: , , , , Tags: , , , , , , , , , , ,
Citation: Lawson, Allison D. “IS-45 Active Permitted Mine Operations in Colorado, 1996-97.” Mining. Information Series. Denver, CO: Colorado Geological Survey, Department of Natural Resources, 1998.

Description

Lists coal, metal, gemstone, building stone and non-metallic mines, and sand and gravel operations. Includes locations on a state map and a directory by county with mine type and commodity. 58 pages. 1 plate (1:1,000,000). Digital PDF download. IS-45D

This directory provides historic prospective with respect to active mines in 1996 to 1997 time frame. This publication updates IS-41 “Active Permitted Mine Operations in Colorado, 1995-96”, and in turn was updated and expanded by IS-68 Directory of Active Mines and Mine Permits in Colorado, 2002.

Sources used to compile this data set include: a) The Colorado Division of Minerals and Geology (CDMG) database of permitted mines and quarries, which lists operations as active that are either in production, out of production and in a reclamation process, or in suspension; and b) Individual mine and quarry files in the offices of CDMG, which in some cases do not clearly reflect current status.