Caption: Catching the late afternoon sun it's a very nice Fall day to be riding the front of the locomotive during switching operations. This trio of GP38-2's plus a GMD1 are heading south on the Camrose sub, shortly to stop and switch back across 17th Street into the industrial sidings leading to the Rio Tinto Alcan plant. Four of the loads are petroleum coke waste which is processed at the plant. The lead locomotive is GP38-2 CN 7526, followed by GP38-2(W)'s 4781 and 4778, and at the rear GMD-1u CN 1433.