I'm sure there must be a quarry dweller or two alive and it would interesting to listen to their memories of life in the quarries.
Amherst sandstone comes in both the brown and gray varieties. It is known as a building material and because of its very fine grain is prized by butchers, woodworkers and woodcarvers for its use as a sharpening stone. Also it doesn't have the negative characteristics of Arkansas sandstone; Arkansas sandstone will collect the metal particles of the tool being sharpened, where as Amherst Sandstone will not!
Tom Lehman