Image 1 of 1
20141118GR_3MCanada008.JPG
London, ONT.: November 18, 2014 -- Tom Edward, left and Mark Migcheis check one of the boilers at 3M Canada's facility in London, Ontario, November 18, 2014.
(GEOFF ROBINS for Postmedia)
(GEOFF ROBINS for Postmedia)