TSM is based on a foundation of self-assessment. Every year, every mine that participates self-assesses. Every third year they are required to undertake an external verification. You see a third of the membership verified each year.
Part of that process also includes the role of a national advisory panel that's made up of aboriginal interests, environmental NGOs, social NGOs, and the financial community. There are about 12 individuals on this panel who also have a role in inviting a small number of companies each year to go through a post-verification review. It's a multi-layered verification process.
The biodiversity indicators are new. The program itself has been around for ten years. We've been reporting on performance around biodiversity for three years. The initial results were relatively low in terms of measuring the systems in place that companies have for managing their biodiversity conservation obligations. We've seen that doubled in the last three years from between 20% and 30%, depending on which of the three indicators you're talking about, to over 60% in some cases. We're making progress.
I admit that we have a way to go, but I think one of the important parts is that we're not afraid to put out into public view that in some cases we don't have these systems in place but we're working towards it.