Pump Station 5 personnel remove the first of three start up “pigs,” devices used to precede the crude oil front during initial operation of the trans Alaska pipeline system.  The pig made the journey from Pump Station 1 to Pump Station 5, a distance of 275 miles, in 10 days.  A second pig, launched yesterday (June 30) from Pump station 5, is now travelling through the four foot diameter pipeline to Pump Station 10.  There, the third and final pig will be launched to lead the oil to its final destination at the Valdez terminal.  Alyeska Pipeline Service Company 7/1/77., 1977-07-01, PCA0002-6-69, Folder: PCA0002-6. 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/17999 Accessed February 22, 2025.