■ Accurate straight hole for better blasting effect control. ■ Faster stripping speed by combining work benches & pre-split blasting hole. ■ Less waste excavation by increasing slope angle. ■ Better flexibility than traditional surface mining & quarry rigs. ■ Heavy duty motor-chain driving feed beam, stable & reliable. ■ Box type boom, strong & flexible. ■ A/C equipped full view FOPS & ROPS cab for noise and shock proof. ■ All closed machine, air spring protection doors convenient for maintenance and service. ■ Round table auto pipe changer, rotary head with excellent drilling ability for 3.5/4 inch hammers,