I've never been to Dartmouth, however here's a picture of it, taken from the other side of the bay, the Halifax waterfront. Two CN SD75I's have come off the Gypsum train and are waiting in the yard. Although it is hard to see, a 47xx series GP38-2 is hiding behind them, with a load of autoracks for Autoport (major Canadian auto importing center). I've read so much about this place on the AtlanticRails group, yet only been there once myself.