National Geographic : 1941 Jun
Photograph from Caterpillar Tractor Co. The Natural Gas Pipe Line Company of America Lays a 20-inch Line from Oklahoma toMilwaukee This crew is working near Annawan, Illinois, on the 100-mile section between Geneseo and Belvidere. Such lines may runfarfrom roads orhighways, making short cuts across country. Farmers who surrender right-of-way across their fields are indemnified. Total length ofoil, gasoline, and natural gaslines intheUnited States would make a big iron snake 321,000 miles long (page 730).