Later, it played a major part in the construction of the Grand Coulee Dam's third powerhouse as well as the World Trade Center in New York. The company's Structural Steel division fabricated the steel for the construction of the Space Needle for the 1962 Seattle World Fair. That same year, the acquisition of Dart Truck Company permitted its entry into the entirely new market of mining vehicles.
Pacific Car and Foundry greatly expanded its heavy-duty truck capability with the purchase of Peterbilt Motors Company in 1958. The company entered the heavy-duty truck market in 1945 with its first major acquisition, Kenworth Motor Truck Company of Seattle. This product line later became the basis for PACCAR Winch, located in Oklahoma, which now includes Braden, Carco and Gearmatic. Under his leadership, the company expanded its products and introduced the Carco line of power winches for use on crawler tractors in the logging industry. Paul Pigott, son of the founder, acquired a major interest in the company from American Car in 1934. In 1924, William Pigott sold control of the company to American Car & Foundry Company. The company later merged with Twohy Brothers of Portland in 1915 to become Pacific Car and Foundry Company, a name it retained for the next 55 years. Colvin successfully shepherded the company through this difficult period. The new plant gave the business new momentum and company president William Pigott (1860-1929) and in particular the company vice president Oliver D. The destruction of Seattle Car's Youngstown plant by fire, coupled with the repercussions of the national financial panic of 1907, had placed the company in voluntary receivership. opened a modern railcar manufacturing plant in Renton. In February 1908, the Seattle Car Manufacturing Co. to produce railway and logging equipment at its plant in West Seattle. Seattle Car and Foundry works at Renton, Washington, 1916.