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The heart of the Perpetual Storage fortress is one of the most impregnable structures created by man...the vault.
![]() Constructed and dedicated solely to vital records and information protection, the Perpetural Storage vault combines the best of modern security protection with an understanding of the needs and concerns for a disaster recovery program for modern business and government.
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GEOLOGIC SETTING
Located in Little Cottonwood Canyon, Salt Lake County, Utah. The vault entrance is approximately 250 feet above the bed of Little Cottonwood Creek, and is therefore safely above any possible flooding because of spring runoffs. The massive, tough, sparsely jointed granite would probably behave as a monolithic entity (one solid piece of rock) that would suffer little internal deformation or damage to the vault interior during an earthquake. In summary, the vault is geologically a favorable storage facility because of its location within the interior of a body of hard, tough granite, and because there is little or no potential hazards from floods, gravity-induced rock falls, and earthquakes. * The granite is composed of about 85% feldspar and quartz, and about 15% biotite and hornblende, in a tightly interlocking pore-free texture. The older wall rocks into which the granite magma was intruded some 26 million years ago are, massive quartz-rich metamorphic rocks with more closely spaced joints than are characterized in other granite formations.
LIQUEFACTION POTENTIAL
PLANNED ADDITION
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