2002 SME Annual Meeting, Phoenix, Arizona, 25–27 February 2002
Authors: J. A. Cremeens (AAI) and M. H. Rauschkolb (US Borax)

Geotechnical solutions were developed for closure of two historic, remote underground mines in the deserts of southern California.  Closure criteria included access closure, minimal site impact, and optimum use of native materials.  The closure designs and construction activities incorporated techniques for protecting sensitive biota, particularly bats and desert tortoise.  The types of mine openings that were closed include adits, declines, shafts, daylighted stopes, and dugout dwellings.  The desert locations permitted implementation of cost-effective closure techniques that relied upon the use of native materials.  The strategies and techniques developed for these desert closures are adaptable to other climates.

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