2 days ago · Optimum Crush was founded in 2013 by Jerrod Dulmes, who had gained considerable experience working with the Raptor line of cone crushers. Dulmes and the team at Excel Crusher Technologies designed, built and installed the first Raptor 900, 1100 and 2000 series of cone crushers. A mechanical engineer, Dulmes became fascinated with cone crushers and mining, and his training and .