BUCYRUS -- While some industries have closed their doors in the current economy, Ryder-Heil Bronze Inc. has withstood the ups and downs of the last 100 years. The company was founded in 1910 by Parmly H. Ryder. The business was incorporated as the Ryder Brass Foundry Company on Oct. 8, 1910, and has always been at 126 E. Irving St. Ryder's son, Charles, took over the company in 1969 and ran it until it was…