The inquest's first witness was Bob Barclay, a mining engineer who works for the Ministry of Labour.
He spoke about the types of mines in Ontario, types of ground failure, and more.
Other people expected to speak at the inquest include Bruce Peter, the person that found the men, and a supervisor, Wade Johnson.
Bisaillon and Methe were working for Taurus Drilling when they were killed.
The proceeds will continue throughout the week.
GREATER SUDBURY -- The inquest into the deaths of two men who were killed on the job at a Sudbury area mine begins Monday.
49-year-old Normand Bisaillon and 34-year-old Marc Methe died on May 6, 2014, while working underground at the Lockerby Mine.
An inquest is mandatory under the Coroners Act.
The proceedings will examine the circumstances surrounding their deaths and then a jury may make recommendations aimed at preventing future deaths.
The inquest is expected to last five days and hear from approximately 12 witnesses.
It is scheduled to begin at 9 a.m. Monday morning at the Northbury Hotel and Conference Centre.
Dr. Steven Bodley will preside as inquest coroner and Julie Lefebvre will be counsel to the coroner.
CTV News is following the story and will have more details as they become available.