Oil pucks and pellets; Canada eyes new ways to move stranded crude

CALGARY, Alberta (Reuters) - Canada's biggest railroad says it is attracting interest from oil producers in its effort to move crude in solid, puck-like form, as clogged pipelines divert more oil to riskier rail transport.Congested pipelines have stranded much of Canada's crude in Alberta, driving discounts to record-high levels. Canadian heavy crude traded on Friday for less than one-third of the U.S. benchmark light oil price.The latest blow to the sector landed on Thursday, when a U.S. court..