how to get gradation of quarry blasts
Best practices Drilling and blasting Pit Quarry. Dec 07, 2015 0183 32 Larry Mirabelli, senior manager at Buckley Powder Co, teamed with Bill Hissem, senior mining engineer at Construction, to deliver a presentation on drilling and blasting at the 2015 Quarry Academy hosted by Dyno Nobel and Mirabelli, who has more than 40 years of experience in explosives technology