Demolition of Andesite stones at PT Sumber Gunung Maju Bravo 10 is carried out by drilling and blasting. The drill equipment used at PT Sumber Gunung Maju Bravo 10 operates 2 drill tools with the type of Marton Junjin JD-800 totaling 4 and Furukawa 910-DS totaling 1 where both have hourly production of 1,603.05 BCM / Hour for 5 drilling tools HCR and 143,024.22 BCM / Month. Blasting in Bravo 10…