walker_aggregates-mcgregor_quarry-award_of_excellence_01_3.jpg

Get the facts.

What Is Aggregate?

Aggregate is the technical name for stone, sand and gravel used in construction.  It is in the buildings we live and work in. It’s the roads and sidewalks we drive and walk on. It plays a vital role in the water purification process and can even be found as filler in paper and some pharmaceuticals.

When you think about it, aggregate is quite literally the foundation of our economy and society – which is a very impressive accomplishment for something as small as a grain of sand.


Read some incredible industry stories!

Moving from Stone to Concrete

The ‘hole-in-the-wall bridge’ over canal lake pioneered a novel new concrete reinforcement system in the early part of the 20th century.

A Breath of Fresh Air

The control of fugitive dust at aggregate sites is something that members of the Ontario Stone, Sand and Gravel Association (OSSGA) take very seriously. From the licensing process through to final rehabilitation, operators must consider the potential impacts of fugitive dust and ensure that “dust is mitigated onsite,” a phrase embedded in the conditions on almost every site plan.

If Walls Could Talk

At U of T’s downtown campus, the stones have witnessed more than 150 years of history.