Henry Clay Frick was an American industrialist, financier, union-buster, and art patron. He founded the H. C. Frick & Company coke manufacturing company, was chairman of the Carnegie Steel Company, and played a major role in the formation of the giant U.S. Steel manufacturing concern. He also financed the construction of the Pennsylvania Railroad and the Reading Company, and had extensive real estate holdings in Pittsburgh and throughout the state of Pennsylvania. He later built the historic neoclassical Frick Mansion, and upon his death donated his extensive collection of old master paintings and fine furniture to create the celebrated Frick Collection and art museum. However, as a founding member of the South Fork Fishing and Hunting Club, he was also in large part responsible for the alterations to the South Fork Dam that caused its failure, leading to the catastrophic Johnstown Flood. His vehement opposition to unions also caused violent conflict, most notably in the Homestead Strike.