1. Reported historic asbestos mines, historic asbestos prospects and natural asbestos occurrences in the Rocky Mountain states of the United States (Colorado, Idaho, Montana, New Mexico, and Wyoming) Author/Creator: Van Gosen, B. S. 1960- (Bradley S.) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2007 Resource Type: Map Edition: Version 1.0, posted July 2007. Access & Availability: Loading