The mine consists of one slope shaft, an air shaft and about two hundred yards of passage. The air shaft would have once been a trial shaft, sunk to test the quality of the stone. It seems that the shaft was sunk in an area where the stone was good so a slope shaft was built.
Rails were installed to move the stone and a lot of preparation went into the mine.
It was later found out that the stone was poor and fractured. This meant that it was impossible to cut a large block and so was impossible to economically compete with other stone companies which explains why the quarry is so small and was quickly abandoned.