Hamilton, Ont. — National Steel Car Ltd. has signed a contract with Potash Corp. of Saskatchewan Inc. (PotashCorp) to produce an additional 1,000 custom-built potash railcars for delivery in 2012/13. The custom-built railcars are 13 feet shorter than traditional grain cars and are specifically designed to accommodate the weight and density of potash. This new contract with PotashCorp follows an original order in 2010, also for 1,000 of the potash cars. National Steel Car has also produced more than 5,000 similar rail cars for Canpotex Ltd., the overseas marketing organization that represents Saskatchewan’s three potash producers.