Renco Group

The Renco Group of New York City is a diversified holding company with interests in mining, metal production, material handling and other business. Among its subsidiaries are Doe Run Resources, US Magnesium and Unarco Material Handling. The Renco Group owns a 40% stake in defense contractor AM General, maker of the military's all-terrain vehicle the Humvee, and its civilian counterpart, the Hummer. Forbes does not include estimated revenues of AM General in its sales estimate for the Renco Group. Brands: HumVee, Hummer