One worker is believed to have died and two others have been hurt at a mine just west of Kamloops, B.C.
A statement from Toronto-based New Gold says the three were at working at the New Afton gold and copper mine around 1:40 a.m. when they were hit by what the company describes as a mud rush.
The statement says one contract driller is presumed dead while the two New Gold employees have non-life-threatening injuries.
New Gold says RCMP and provincial safety authorities have been notified and are at the scene.
All activities at the mine have been suspended while an investigation is underway.
The company website says New Afton is an open pit and underground mine that employs about 500 people and has been producing an average of 85,000 ounces of gold and 75-million pounds of copper annually since it opened in 2012.