Canada, Ontario, St Lawrence Seaway - St. Lawrence Ship Channel Maintenance Dredging Services Tonnage Fees Bulletin - No. 6 - July, 1999 28 February 2018
Canada, Ontario, St Lawrence Seaway - Final Fee Schedule effective 1 September 2002 until 31 March 2003 28 February 2018
Canada, Ontario, St Lawrence Seaway - Final Fee Schedule effective 1 September 1999 until 31 August 2002 28 February 2018