Washington, D.C. (December 10, 2015) – "Agricultural commodities along with dry bulk, general cargo and containerized goods continued to enhance cargo tonnage on the Great Lakes-St. Lawrence Seaway System during the month of November," said Betty Sutton, Administrator of the Saint Lawrence Seaway Development Corporation.  "With just under a month remaining in the 2015 navigation season, we anticipate vessel activity in the Seaway System to be robust right up to closing."