Oil at the North Slope. Oil at Alaska's North Slop at Prudhoe Bay -- a lot of it. Possibly the biggest discovery in history. Who knows? It is there alright. But how does one harvest and deliver a product so plentiful without transportation over the endless miles of tundra. And the nearest city, Fairbanks, some 300 miles to the south. The answer was found -- pipe! A giant 48-inch pipeline, a project of seven of the large oil companies known as Alyeska Pipeline Service Company. A pipeline from oil-rich Prudhoe Bay, 800 miles south to Valdez in Prince William Sound -- the northern most ice-free port in North America.