Harold Simmons is the chairman of holding company Valhi ( VHI), which has controlling interests in Keystone Consolidated and Titanium Metals, which is the leading manufacturer of titanium-based products. If you think the $1 million Simmons gave to the super PAC supporting Gingrich is hefty, understand that he has given a cool $10 million to Karl Rove's super PAC, American Crossroads. Simmons is a huge Republican donor as he reportedly gave some $8.6 million in 2011 to Republican super PACs. -- Written by Joe Deaux in New York. >Contact by Email. >Follow Joe Deaux on Twitter. Subscribe on Facebook.