An excavator lowers a minivan onto a waiting dump truck at the Sarnia entrance of the St. Clair Tunnel on June 30. Workers had spent more than a week removing damaged rail cars and their cargo from inside tunnel, site of a 47-car derailment two days earlier. No injuries were reported. The train was carrying more than 100 newly built vehicles, and a tanker car ruptured, spilling more than 13,000 gallons of sulphuric acid inside the tunnel, which slowed the cleanup effort. The Transportation Safety Board of Canada and its U.S. counterpart are investigating the cause. Troy Shantz