Home > Mining Companies > Ontario Trap Rock Quarry
Ontario Trap Rock Quarry
Owner: R.W. Tomlinson Ltd.

Ontario Trap Rock (OTR) is a specialty aggregate quarry that sits on a 1,000 acre site on the shores of Lake Huron. The aggregate deposit mined from this location is known as diabase or trap rock. 
 
Our state-of-the-art crushing equipment allows us to produce a high quality cubical material, which we ship throughout Canada and the United States to be used for the following:
• rail ballast
• rock wool insulation
• high quality asphalt
• ready mix concrete
• industrial mineral applications

OTR diabase is currently used throughout the Great Lakes region by a number of Class I, Regional and Shortline Railroads.