Cannabis extraction labs causing residential explosions in Edmonton

The Edmonton Police Service says officers recently responded to two significant explosions and fires caused by cannabis extraction labs.

These labs isolate tetrahydrocannabinol, or THC, from cannabis to produce cannabis oil or a highly concentrated form of THC called “shatter” or “honey oil.”

Health Canada says shatter, budder, wax, honeycomb and rosin are often the strongest cannabis products.

Many are made from butane hash oil (BHO) using different processes while others, like rosin, are made without solvents.

The extraction practice is illegal and can be very dangerous.

READ MORE: Alberta RCMP explain what ‘shatter’ is after series of drug-related arrests

On Wednesday, Edmonton police showed off some of the tools seized from homes where cannabis concentrates were being made.

Investigators said one of the problems lay in the process: it requires butane and if there’s a error, houses can explode. Police have found three such operations

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