That ball is made of lead with an outer shell of steel, it's faster (and "tons" more fun) than a hammer, which would also raise the cost of this type of work we always do, the crusher runs at $250 per hour, 2 excavators at $120 each, that's $490 per hour, dairy farmers have big pockets, but not that big.
The crusher can only handle 24" pieces, so downsizing is much faster for faster crushing.