The union representing Port of Quebec longshore workers has raised concerns about the handling of ammonium nitrate, the chemical compound responsible for the Beirut Port explosion in 2020. Since the start of a lockout on September 15, 2022, replacement workers have been handling ammonium nitrate at the port. The union emphasized the importance of comprehensive training and vigilance when dealing with the highly explosive material. It expressed concerns about the safety of citizens living near the port, especially if an explosion were to occur. The union called for pressure on QSL International to resolve the ongoing conflict and prioritize safety.