DescriptionDigital image of Hudson & Manhattan R.R. postcard titled: Lots of work for the sand hogs here, 1908. Courtesy of Leon Yost. A view of workers inside a tunnel not far from the tunnel face wearing protective hats that have lamps. A waste car is to the left. Also seen are the temporary beams. From a series: The Hudson and Manhattan Railroad Company Tunnel (McAdoo system) under the Hudson River.