![Mining / Pittsburg / Underground mining / Headframe / Mine closure Mining / Pittsburg / Underground mining / Headframe / Mine closure](https://www.pdfsearch.io/img/74389e0d1c55b02d448fd548c12cfce6.jpg) Date: 2014-05-27 11:44:16Mining Pittsburg Underground mining Headframe Mine closure | | Colorado Division of Reclamation, Mining & Safety PITTSBURG PROJECT - Gilpin County, CO 2007 ProjectAdd to Reading ListSource URL: mining.state.co.usDownload Document from Source Website File Size: 761,28 KBShare Document on Facebook
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