1/4 Down Limestone Winnipeg | Quarter Down Limestone | 2 Inch Down Limestone | 3/4 Clear Limestone Winnipeg | Thrifty Winnipeg Meta Description: Calcium carbonate (CaCO 3) is the primary component of limestone, which is a SEDIMENTARY ROCK. As building stones and aggregate, and as the main component of Portland CEMENT and lime, carbonate rocks - and even marble, the metamorphosed near-equivalent of limestone - play a vital role in the CONSTRUCTION INDUSTRY. Additionally, limestone is utilised in glass manufacturing, as fillers, abrasives, soil conditioners and in the manufacture of a variety of chemicals keywords: Concrete Lego Blocks Winnipeg,Precast Concrete Parking Curbs,Black Granite stones for sale winnipeg,Red Granite stones winnipeg