These rails look larger than Monson quarry rail, and the gauge looks wider than two foot. I lived in Hallowell for almost 27 years, but I had never seen this track because the quarries were then filled with water. Apparently, the quarry track did not connect with the MEC at the former granite sheds in downtown Hallowell because of the steepness of the Kennebec Valley ("Winthrop Hill") in that area. According to the Images of America book "Around Hallowell", which has several good photos of this operation, horse teams were needed to move the granite to the downtown granite sheds or waterfront. The granite shed sidings might have yielded good rail, but they were removed about 1985.