I have bushel of oyster shells from a recent oyster roast we had at the house. We're too far inland to drop them off at the shell recycling center (2 hours away). Seeing as how we'll be having more Oyster Roasts at the house in the future, I'd like to recycle the shells and add them to the gravel in the driveway.
What is an way to crush the oyster shells?
Chapin, South Carolina