hewitt robins. hewitt robbins 54" x 36" impact crusher feeder, s/n 207203, 1995 inertia horizontal 40" x 48' impactor .3 bar rotar, 16' feeder, 3645 impact crusher ore mineral crushers hewittrobins 3645. this hewittrobins 36×45 impact crusher was running when double rotor impact crusher listed in .