Asarco Mineral Discovery Center: copper mine tours, exhibits, and gifts
The Asarco Mineral Discovery Center offers the only exhibit center, gift shop, and tour of a modern, working, open-pit copper mine in Arizona. Twelve miles south of Tucson, Arizona, at Interstate 19 and Pima Mine Road.
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Powell River Project - Estimation of Southwest Virginia Coal Reserves
Powell River Project Information for the Virginia Coalfields Estimation of Southwest Virginia Coal Reserves E. C. Westman, Assistant Professor, Department of Mining and Minerals Engineering, Virginia Tech; C. Haycocks, Professor, Department of Mining and Minerals Engineering, Virginia Tech; and C.E. Zipper, Director of the Powell River Project and Extension Specialist, Department of Crop and ...
ext.vt.edu/pubs/mines/460-139/460-139.html   reviews