"The Alaska Pipeline -- A Progress Report, Sept. 1975, Episode 1: "The trans-Alaska Pipeline by mid-September 1975 is 29% complete." #TBT | Alyeska Pipeline Service Company

Forty years ago today, Alaska’s steel artery – the Trans Alaska Pipeline System – pumped its first barrel of oil, and 17 billion more have followed since. It is impossible to overstate the importance of TAPS to Alaska: supporting our schools and public services, building a strong economy, and bringing countless opportunities to Alaskans. Looking forward to many more years of a full and functional pipeline. Happy Birthday, TAPS! | Senator Dan Sullivan

11K views · 140 reactions | The Alaska Pipeline -- A Progress Report, Sept. 1975, Episode 4: "The timber is hand-cleared and cut to fall within the limits of the right-of-way." #TBT | Alyeska Pipeline Service Company | Facebook

87K views · 907 reactions | "Before the pipe is lowered into the ditch, it is coated with a tape material to protect it from corrosion." #TBT The Alaska Pipeline -- A Progress Report, Sept. 1975, Episode 10 | Alyeska Pipeline Service Company | Facebook

10K views · 305 reactions | "By the end of 1976, all 800 miles of mainline pipe were installed." #TBT The Alaska Pipeline -- A Progress Report, Sept. 1975, Episode 12 | Alyeska Pipeline Service Company | Facebook

4.8K views · 2.8K reactions | The Trans-Alaska Pipeline is an 800-mile long, 48-inch diameter pipeline that conveys oil from here in Prudhoe Bay, on Alaska’s North Slope, south to Valdez in Prince William Sound which is the farthest Northern port that doesn’t ice over in the winter. | Leigh Coates | Facebook

9K views · 210 reactions | "In order to pursue their trade, pipeliners have to be transient. They have to go where the work is and the work is generally someplace other than where they'd like to be." #TBT The Alaska Pipeline -- A Progress Report, Sept. 1975 | Alyeska Pipeline Service Company | Facebook