Joe AutoDrill wrote:
Sounds like a job for a HUGE sledge hammer, some safety gear and lots, lots
and more lots of hearing protection.

Cast iron is brittle compared to steel, but is still amazing strong. I
broke up a bathtub once and even with large planar surfaces it was
tough. The boiler is a series of box sections and will be that much
stronger. Like the radiators we've done & don't want to repeat.

If the plasma cutter is out, I will score it with a cutoff wheel in an
angle grinder & jump on it. The pieces are 4 - 5' wide & SHOULD break
where scored.

Bob