[Letter from Virginia M. West, Deputy Minister, Ontario Ministry of Natural Resources, to Deputy Ministers of Health Canada, Environment Canada, Natural Resources Canada, and Canadian Council of Forest Ministers, dated March 1, 2011, re the Honourable Linda Jeffrey's letter to the Health Minister, the Honourable Leona Aglukkaq, regarding the historic use of 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T) herbicide in Ontario, dating back to the 1950s, 1960s, 1970s and possibly the 1980s]Ontario. Ministry of Natural Resources