Praxair Canada Inc., a subsidiary of Praxair Inc., has signed a long term supply agreement to design and build a cryogenic air separation plant to supply 900tns/day of gaseous oxygen to Essar Steel Algoma Inc.’s steel mill located at Sault Ste Marie Ontario in Canada. The new plant is scheduled to start up by early 2011 and will be fully integrated with Praxair’s existing air separation facilities at Essar in Sault St Marie.