Based in Moncton, New Brunswick, Canada, Major Drilling Group International Inc. is one of the world's largest drilling service companies serving the mining industry. To support its customers' varied drilling requirements, Major Drilling maintains field operations and offices in Canada, the United States, South and Central America, Asia, Africa and Australia. Major Drilling provides all types of drilling services including surface and underground coring, directional, reverse circulation, RAB, geotechnical, and environmental drilling. 

Major Drilling's stock trades on The Toronto Stock Exchange under the symbol "MDI".