The city's fire department had contacted WorkSafeBC about the incident and RCMP are now leading the investigation.

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That statement will require a correction.  The RCMP do not lead occupational workplace fatality investigations, WorkSafeBC does.

The police would have very little knowledge of ammonia systems and the regulations surrounding safe handling and storage.

It often happens that police and emergency responders are secondary casualties as they approach a situation they aren't trained or equipped to identify, thankfully this didn't occur in this tragedy.