Describes the history, geology and environmental setting of two mines in the Hahns Peak mining district. Both of the sites lie on US Forest Service land and are within the Willow Creek drainage basin, a tributary of the Elk River. Digital PDF download. OF-03-13D
From the Introduction:
During the summer of 1997 the Colorado Geological Survey (CGS) inventoried mines in the Hahns Peak area of the Hahns Peak Ranger District, Routt National Forest. This project was part of an eight-year, statewide inventory of abandoned mines on U.S. Forest Service administered lands in Colorado. Not all of the mines were on National Forest System (NFS) lands; in some instances the forest boundary or mine locations were incorrectly located on Primary Base Series (PBS) maps. Some mines close to NFS lands and mines that potentially impacted NFS lands were also inventoried. In September 2000, the U.S. Forest Service (USFS) requested more detailed studies on the 7D adit (inventory area #337-4522-1, feature #100/200) and Southern Cross Mine (inventory area #337-4521-1, feature #102/202) in the Hahns Peak mining district. Both of the mines are totally on NFS lands and had received an Environmental Degradation Rating (EDR) of 2 from the CGS (Appendix). This study presents the results of the detailed work performed by the CGS on the Southern Cross Mine and 7D adit.