We work with the Cement Association of Canada quite regularly. They're a big member, and every year we are looking at their product and at how it can be improved.
They are certainly moving that forward. They have innovative new products out right now in terms of cement. One's called Portland-limestone cement. For that product by itself, relative to regular Portland cement, as soon as you start using it—and you can pretty well use it in any application—you get a 10% reduction in your carbon footprint. This Portland-limestone cement has been around for about 30 years. In Europe, you're allowed to use percentages of up to 30% to 40% of that product in your concrete mix design.