Stone Quarries (Historical) - Oakland - LocalWiki
There are two quarries; in the upper one the rock is a hard, medium-grained, gray sandstone; in the lower quarry face in the canon, 100 yards below the road, is a flinty, dark-colored, metamorphosed sandstone. The crushing plant is abandoned and badly out of repair." 1 The site of the upper quarry is now occupied by the Zion Lutheran Church ...