The Ontario Trap Rock quarry is located in Bruce Mines, Ontario (60km east of Sault St. Marie). Sales and marketing is done from the London, Ontario office. OTR produces a range of stone products for use in paving for the construction industry. Stone is used in both asphalt and concrete. OTR also produces rail ballast stone and stone for rock wool insulation. Products are shipped by self unloading ships throughout the Great Lakes. Some products are shipped by rail and truck. The quarry employs 27 people during the production season.