Process Montana Resources
Step 1: Rotary drills bore 48 foot holes, 97/8 inches in diameter, into the granite host rock. Step 2: Drill cuttings are assayed to verify composition. Step 3: Drill holes are loaded with explosives to blast and fracture the rock. Step 4: Electric shovels load ore into haul trucks. Step 5: Ore is hauled to the crusher in 240 ton capacity trucks.