Ontario Trap Rock

9630 ON-17
Bruce Mines, ON P0R 1C0

About Ontario Trap Rock

Located near Sault Ste. Marie, Ontario, the OTR quarry contains more than 80 million tons of aggregate known as diabase or trap rock. The very hard, durable nature of trap rock makes it ideally suited to the stringent specifications of railroads and high friction asphalt applications.

Tomlinson offers an extensive network of over 18 Canadian and US ports which give asphalt producers, pavement preservation contractors and railway operators the confidence of timely and reliable deliveries of the highest quality friction aggregates and rail.

Competitors of Ontario Trap Rock

CWI Railroad System Specialists

CWI is dedicated to providing quality products, services, and solutions to facilities departments, mechanical departments, and capital projects departments in the Railroad Industry. We are committed to the continual improvement of our products and processes to achieve our quality objectives,... Read More


HNTB provides innovative transit and rail solutions to the nation’s largest transit authorities. We plan, design and construct rail and public transportation systems and facilities for all modes of transit across the country. We offer fully integrated services for all phases of the project life... Read More


Founded in 1944, Parsons Corporation, a digitally enabled solutions provider, is focused on creating the future of the defense, intelligence, and critical infrastructure markets. From Earth to outer space, we deliver tomorrow’s solutions today. Equipped with the capabilities required to take on... Read More

Products by Ontario Trap Rock

By Ontario Trap Rock

OTR has an extensive inventory of boulders with sizes ranging from less than 12″ to over 3.’ Having our own boulder supply means our customers can enjoy savings by buying direct from the quarry as opposed to buying from a landscape supplier. Read more »

By Ontario Trap Rock

OTR’s fine aggregates, such as Slurry Seal/Micro-Surface, provides friction properties to the finished surface and increases set time to reduce the duration of road closures. Slurry Seal/Micro-Surface Products: - DFC Fines - Unwashed manufactured sand Read more »

By Ontario Trap Rock

Due to its chemical properties, OTR’s products can be used as an ingredient to in the production of rockwool insulation. Mineral Wool/Rockwool Products: 3″ x 4″ 4″ x 6″ Read more »

View all products »