The northbound lanes of Highway 406 remain closed between Glendale Avenue and Westchester Avenue in St. Catharines, Ont., after an acid spill on Wednesday.

A hydrochloric acid spill Tuesday morning sent 23 workers from a St. Catharines industrial plant to hospital, including several who were directly exposed to the chemical. St. Catharines fire Chief ...

Hamilton 23 people sent to hospital after hydrochloric acid leak at St. Catharines, Ont., auto plant Niagara Health says ER services returned to normal operations as of 1:30 p.m. ET ...