Claim: The district resources were built between about 1883 and about 1945; includes the Anderson and Rion Quarry sites, commercial buildings and structures associated with granite quarrying and finishing operations.
Evidence: The district includes the Anderson and Rion Quarry sites, industrial buildings and structures associated with granite quarrying and finishing operations, residences constructed for management personnel at Anderson Quarry, the Rockton and Rion Railroad line and side tracks, two steam locomotives from the Rockton and Rion Railroad, and a ca. 1941 school building constructed of granite.