Thank you for the question.
There's no doubt, as I've said, that we're a 100-year-old operation in Sudbury and addressing our legacy issues does take time when you look at the magnitude and scope of our operations.
I can tell you that our Clean AER project, which we're spending a billion dollars on and is nearing completion, was designed specifically to address some of those standards. We are reducing our SO2 emissions by 85% to get into compliance. It's a billion dollars on a project that isn't necessarily going to result in any new nickel, but we're willing to make that investment because it is important to us that we're seen to be a company that's responsible and is addressing our obligations.
In terms of nickel, in addition to the billion dollars we're spending on our Clean AER project, we just completed a $70-million project at our Copper Cliff nickel refinery this year to address nickel standards, again to make sure that we get into compliance with the new standards, but frankly, it's a challenge for us.
For example, recently there have been discussions about the SO2 standards being lowered even more. We're in a situation where we're trying to complete a project to get into compliance and the government is discussing reducing the standard even further, so it's a journey for us. It's continuous improvement. We are very transparent about site-specific standards that do require public consultation, but we're doing the work to get us there.