On June 8, 2011, Jason Chenier, 35, and Jordan Fram, 26, were killed when they were buried by an uncontrolled run of muck at the 3,000-foot level of Vale's Stobie Mine.
Vale later pleaded guilty to three charges under the Occupational Health and Safety Act and was fined $1,050,000 on Sept. 17, 2013.
On Jan. 29, 2012, development miner Stephen Perry, 47, was killed at Vale's Coleman Mine in Levack.
Perry died after he was struck by a 14-ton piece of rock that broke from the wall when he was working at the 4,215-foot level of the mine.
The Ministry of Labour is currently in the midst of a mining health and safety review in response to the fatalities and injuries that have occurred in mines across the province in recent years.
The review board has conducted public consultations in a number of mining jurisdictions across the province, including Sudbury.
The province's mining health and safety review aims to look at a wide range of areas related to mine safety, including: technological advances, assessing current health and safety regulations and examining mine safety training practices.