New Brunswick is basically a lumber colony for the Irving companies (also, so is Northern Maine, see sprainedankels' comment elsewhere in this thread: https://news.ycombinator.com/item?id=26506784). On average 1% of the forest cover of New Brunswick (at least 85% of the province is forest cover) is clear-cut every year, and then the clear cut is drenched in herbicides from the air. The current herbicide is glyphosate, which has been linked to neurological disorders, but aerial spraying of herbicides in other forms dates back to the 1950s.
Here is a linkdump for more information:
http://isourforestreallyours.com/Isourforestreallyours/Start...
https://web.archive.org/web/20160322213243/http://dearbriang...
https://www.cbc.ca/news/canada/new-brunswick/forests-and-flo...
https://www.cbc.ca/news/canada/new-brunswick/louis-lapierre-...
https://www.cbc.ca/news/canada/new-brunswick/forestry-deal-r...
This even comes up in the comments section on satire websites:
"Back around 1973 or 1974, I knew of a photographer who had a summer contract with Irving, documenting the effect of spraying. He photographed deformities, poisoned animals, etc. The company was very secretive and made sure that every single roll of film was handed back to them." https://themanatee.net/firing-of-dr-cleary-proves-once-for-a...
https://themanatee.net/new-brunswicks-10-most-beautiful-clea...