https://en.wikipedia.org/wiki/Chas._T._Main
Chas. T. Main Inc. was an engineering company of the United States founded in 1893 and specialized in power generation—mainly hydroelectric power. In 1985, the company was bought by Parsons Corporation.
https://en.wikipedia.org/wiki/Chas._T._Main
Chas. T. Main Inc. was an engineering company of the United States founded in 1893 and specialized in power generation—mainly hydroelectric power. In 1985, the company was bought by Parsons Corporation.