A growing share of Canadian oil-by-rail traffic is made up of tough-to-ignite undiluted heavy crude and raw bitumen, say industry executives, as companies scramble to cut expenditures with the price of crude down more than 40 percent since June. By eliminating the cost of diluting with ultra-light condensate, heavy oil offers rail shippers an opportunity to claw back a few dollars per barrel in transportation costs. Official data does not break down the different Canadian crudes shipped by rail but interviews with industry executives suggest undiluted heavy and raw bitumen shipments now make up roughly a quarter of the estimated 200,000 barrel per day (bpd) oil-by-rail market. An added bonus is that heavy crude and bitumen are far less combustible than the Bakken and Canadian synthetic crudes involved in fiery crashes that spurred the Canadian and U.S. governments on Friday to tighten safety rules for […]