Ninety-five block (or gate) valves are being installed. Sixty-two of these are remote gate valves, which are battery powered and can be controlled from the Valdez Control Center or from a Pump Station. This is one of the nine manual gate valves., 1976-07, PCA0002-2a-25, Folder: PCA0002-2a. Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977, PCA 2. Alaska State Library - Historical Collections Finding Aids. https://alaska.libraryhost.com/repositories/2/archival_objects/17444 Accessed February 22, 2025.