The stuff they use looks like a 3"x14" white salami shaped tube incased explosive, the crew I watched drilled 8' deep holes and dropped 1 full stick + a half with an ignitor tube inserted, than they would pour a couple buckets of pea gravel in the holes to cover it up, the area they were blasting was 100yds wide by approx 200 long it would start a ripple wave 3' high roaring down the field it was something to watch!
holes 8 ft apart?
