LAC-MEGANTIC, Que. - The Transportation Safety Board says the oil on board the train that derailed in Lac-Megantic, Quebec appears to have been more flammable than regular crude.
The TSB says it plans to take a closer look at the oil that erupted into towering fireballs when the train derailed in the town last month.
The agency took samples of the liquid out of concern that the series of powerful blasts was much more intense than what might normally be expected.
The train was transporting crude from a large shale deposit in North Dakota and some shale is known to contain highly explosive hydrogen sulphide vapour.
Greenpeace says federal regulations do not distinguish between different types of crude oil for transportation purposes, even though the chemical make-up could make one type more explosive.
Yesterday authorities indicated they were ending their search for bodies from the train disaster.
They recovered 42 bodies but believe 47 people died in the disaster.
