Picture #1
Tools required.
Rotary Hammer - I have a Bosch
5/8" SDS Carbide Tip bit
10 3/4" Feathers and Wedges
1 good size shedge hammer
I used a generator to get power to the rock and
my BX to move the pieces around.
Total time was under two hours.
I'm far from an expert but I will say that after
a couple of rocks like this, you start to learn
to "read the rock".