Large Boulder 15 ft Dimensions or Larger
Drill sets of two or three holes on a close spacing of 1 ft or less c/c. Aim the lines of these holes to create smaller pieces. Keep the holes no closer than 2-3 feet
from the edges of the boulder. Drill about ⅔rds
of the height, unless the boulder is imbedded in the ground. If breaking the entire boulder drill through, and then
back off about 1 ft on rest of holes. If you are sheering the boulder off it may be best to drill angled holes under the boulder to sheer it to an elevation.