For those who think the New Haven used the existing electric motor sand facility for steam locomotives when the concrete Cedar Hill coal tower was built rather than an internal system within the coal tower, I would like to know why the New Haven didn't do what they did at Providence. Why blow sand several hundred feet underground ? WHY DO A SIMPLE JOB THE HARD WAY ?
THE FIRST PROVIDENCE PHOTO SHOWS (left to right) THE WET SAND BIN, DRYING BUILDING, ELEVATED SAND DELIVERY PIPE AND TWO DRY SAND DELIVERY BOXES.THE SECOND PHOTO FROM THE TURTABLE SHOWS THE COAL TOWER THAT WAS BUILT AROUND THE SAME TIME AS THE CEDAR HILL PLANT (I don't know the exact date). THE PHOTO ALSO SHOWS THE SAND FACILITY WHICH WAS RETAINED WHEN A NEW COALING PLANT WAS BUILT. NOTE THAT THE NEW HAVEN DIDN'T BLOW SAND UNDERGROUND TO THE NEW CONCRETE TOWER.
WHY ? PROBABLY BECAUSE IT WAS EASIER, MORE RELIABLE AND CHEAPER TO RUN A PIPE A SHORTER DISTANCE JUST AS THEY DID MUCH LATER FOR DIESELS AT CEDAR HILL.
FOR MORE PHOTOS AT CHARLES STREET PLEASE GO TO MY WEBSITE -http://sites.google.com/site/roundhousesinprovidenceri