Canadian Pacific Railway had a derailment west of Golden, BC on March 3. It was reported (Golden Star) that an eastbound (empty) grain train and a westbound potash train collided at 3:14 PM local time.
This photo shows two locomotives on the ground, including one on its side. One of the locos involved is CP 8628, and someone mentioned Olympic unit CP 8874 was also involved. If you browse through the album, you can see the extent of the accident.
Fortunately, the crew sustained only minor injuries. There was a small fire in the area, because the derailment took out the propane tank for the switch heater. The Golden fire department contained the fire. There was a small amount of diesel fuel spilled. You can see a fair amount of potash on the ground in the photos.
Another news report said "An eastbound freight hauling empty grain cars clipped a westbound train carrying potash."