The quarry produces high quality chalk used locally for the manufacture of plaster.
By 1792, this quarry was employing 500 men and producing 15,000 tons of slate per year.
For nearly fifty years, the quarries produced steadily, amounting to more than 4.5 billion dollars in sales.
A quarry will produce dust, noise, and some water pollution, but these can be remedied without too much trouble.
The company's quarry produced high quality bricks with which many houses in the surrounding area were built.
The quarry has also produced specimens of my favorite dinosaur, Stegosaurus.
There is some evidence to suggest that the quarry was producing slate much further back than the officially recognized date of 1800.
The quarry produced about 850,000 tons of taconite pellets each year.
The company's quarry produced high quality bricks which were used to build many houses in the surrounding area.
Its quarries produced blue granite, in addition to pinks and reds.