“
Shipbuilding stalled postwar—the Great Depression came early to the shipbuilding industry—but welding advanced, finding a major new application in pipeline construction. In 1925 the Magnolia Petroleum Company of Galveston, Texas, rebuilt a leaky two-hundred-mile bolted natural-gas pipeline with acetylene lap-welded pipe. After five more years of development—other companies followed Magnolia—electric welding replaced acetylene, eliminating overlapping, using less pipe, and cutting welding time in half. Alloy steels were also important to pipeline improvement, as were improved ditching machines and gas compressors. By 1931, pipeline workers were laying the first thousand-mile natural-gas pipeline from the Texas Panhandle to Chicago.
”
”