So that's the major source.
Then, of course, in the past, deadstock has been a fairly substantial source. Before BSE, Sanimax alone had 50,000 pickup points in Quebec for deadstock. It was pretty much every farm.
As has been pointed out—not in every province, but depending on the environmental regulations of the province, because some are stricter than others—it has become uneconomic, certainly for bovine. Because of the fact of SRM, or specified risk material, you end up having to basically throw the carcass away, as has been pointed out by Kathleen. Whereas before this they were paying the farmers, now it's the farmers who have to pay to have the animals picked up. So that of course is an issue, and there's the side effect of all the other stock and so on.
The other source of material is restaurants, supermarkets—it's pretty much everything. When you think about it, a certain percentage of everything you eat, as far as the meat supply goes, is rendered. In some species, it's as much as 60%. At other times, it's about 30% by weight. So it's big.