Factory sirens will wail in Montreal-wide drill Thursday afternoon

Sirens at nine factories across the island of Montreal will be activated for three minutes at 2 p.m. Thursday as part of a civil protection drill.
The siren warnings are to take place in the event of a toxic leak at one of the plants, and civil protection authorities stress that in the event of a real emergency, anyone within earshot of those sirens is to get indoors as quickly as possible and close all doors and windows.
The sirens that will sound on Thursday are at food processing plants in Ri