Yes, and what allowed that was the use of better technology. As Mr. Gagnier communicated for the aluminum industry, it's pretty much the same thing for most of us involved in what we describe as heavy industry. We continue to progress through the application of the best technology available.
And just to reinforce the message in your prior question to the mining industry, it's all in the manner that the targets are going to be set. Once the target is set that respects the limit of known technology and what is justifiable from an economic sense, the pain will be alleviated in an appropriate economic environment to sustain that. But if you go beyond what is possible with what mankind knows today, it is just a tax.