Another view of Specialty Minerals’ Dolomite Quarry. Canaan, CT. “The Canaan plant has been in operation since 1850, producing ground dolomitic limestones for the whitewash used on the New England houses and churches, for local iron foundries and for agriculture. Dolomite ore from a nearby quarry is processed into ground and screened dolomite products. These products are for cast polymers (cultured marble), asphalt roofing shingles, vinyl tile flooring, joint compound, masonry products, pool plastering, caulks and sealants, white concrete block, white split face block, pre-cast shapes, for use plastering swimming pools, joint compound, sealants, putties, caulks, and other building products like vinyl floor tile, stucco and grout manufacturers. (Mineralstech.com)
And as for the water at the bottom: Quarries are surface mining operations where minerals are extracted. Often sand and gravel quarry operators hit ground water during their digging. As quarries are dug deeper, sometimes springs are opened.