Perpetual Storage, Inc. Mountains

The Perpetual Storage, Inc. (PSI) vault is located within a very unique geological formation, a monolithic laccolith (one solid piece of rock). This formation is so rare that there are only 3 locations in the contiguous 48 United States with 2 located in National Parks. Also, the PSI formation is the only one located near a major metropolitan area. This makes PSI’s location the only location where an off-site storage facility can be built in such a secure rock formation in the contiguous United States.

The granite mountain extends about three-and-a-half miles from the mouth of Little Cottonwood Canyon near Salt Lake City, Utah. PSI previously owned the entire mountain until the early 1960s, when property was sold to the Church of Jesus Christ of Latter-day Saints (LDS Church) to build its genealogical vault. In 1967, PSI started building a mountain vault for businesses, government agencies and professional organizations to store critical and irreplaceable records. PSI only stores digital and microfilm records, keeping our vault paper-free and safe from fire hazards. The types of media we store include: magnetic tape, hard drives, SSD (hard drives), microfilm, microfiche, flash drives and optical disks (DVDs, CDs and M-Discs).

The vault is located within a denser form of granite than what is usually found in nature and located above the flood plain. A geological survey was completed by a professor of geology at Brigham Young University to confirm the strength of the mountain.

The PSI 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 hazard from floods, gravity-induced rock falls and earthquakes.

Perpetual Storage Vault

What makes PSI different from an underground salt mine?

Salt mines are susceptible to collapsing due to earthquakes or tremors, and water leaks that dissolve the salt columns holding up the caverns. Sink holes are known to develop around these locations. Often it’s difficult or impossible to extinguish fires inside an underground facility that stores paper and other flammable materials. Firefighters typically close the shafts to starve the fire of oxygen, but if the facility has too many natural openings for air flow, this is not possible.

PSI is safe from earthquakes because of the unique formation surrounding its vault. Earthquake shock waves pass through solid objects like our granite formation, which does not move because it is “book-ended” on either side by older mountain formations. PSI also does not store paper or anything flammable in the vault and has a fire suppression system to protect against fire hazard. PSI is also approximately 250 feet above the canyon floor, and therefore, safe from floods.

What makes PSI superior to tilt-up constructed off-site storage facilities or data centers?

Tornadoes, hurricanes, flooding, earthquakes, fires and other natural and man-made disasters all have damaged or destroyed tilt-up constructed off-site storage facilities and data centers. What would be the cost in time, money and embarrassment when this happens and irreplaceable data is lost and the facility is unable to function? Is there a solution to these dangers and vulnerabilities?

The Perpetual Storage, Inc. maximum security vault is encased in a solid granite mountain. It does not sit in a flood plain, liquefaction zone or in an area that has devastating tornadoes or hurricanes. PSI does not store flammable paper records. It has been designed to meet and exceed the stringent U.S. Department of Defense specifications for critical data storage.


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