Vault to get Hubbard's writings - 1991-07-25
They also are well-guarded and secretive. Overlooking the Petrolia vault, according to an electrical contractor quoted by Cempa, is an 8,000-square-foot bunker with "closed circuit TV cameras in almost every room and alarm systems all over."
The Petrolia vault is on 3,600 acres bought since 1984 by the Los Angeles-based Church of Spiritual Technology. Cempa says it is a Scientology splinter group set up to preserve the religious and philosophical writings of Hubbard.