Jerry and Wendy Williams started TCC Manufacturing Co. in 2004 for the sole purpose of producing a "fine-grind mineral rubber." Trumbull remains the source for oxidized asphalt and Martin Asphalt is a second source. Today "mineral rubber" is ground and packaged at TCC Manufacturing Co. and shipped to the markets for molded rubber goods (MRG), newsprint ink, shoe sole, drilling mud, industrial wheel and floor mats, indicating only a few of the applications for the hard hydrocarbon.