CALGARY — People in Calgary can expect to hear a consistent round of loud bangs for at least another day as police try to disarm an explosive substance in a south-end industrial neighbourhood.

Police say a moving company had been tasked with disposing of several substances, including a package of picric acid.

But that package was mislabelled and had been sitting for about 10 days when it was discovered early Tuesday afternoon. Police were notified later in the day.

“It is going to take some time to safely deal with these substances," Calgary police deputy chief Cliff O'Brien told a news conference Wednesday.

Calgary police's bomb disposal unit and tactical team began controlled detonations Wednesday, and police say explosions could continue for 24 hours or longer.

O'Brien said detonat

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