Environment workers lay booms on the Chaudiere River near Lac-Megantic, Que., to contain the crude oil spill following a train derailment and explosion, Tuesday, July 9, 2013. At least

 

              Environment workers lay booms on the Chaudiere River near Lac-Megantic, Que., to contain the crude oil spill following a train derailment and explosion, Tuesday, July 9, 2013.  At least
Environment workers lay booms on the Chaudiere River near Lac-Megantic, Que., to contain the crude oil spill following a train derailment and explosion, Tuesday, July 9, 2013. At least thirteen people were confirmed dead and nearly 40 others were still missing in a catastrophe that raised questions about the safety of transporting oil by rail instead of pipeline. (AP Photo/ The Canadian Press, Jacques Boissinot)