I'm going to answer your question—before construction even began, the flags were there in numerous Auditor General's reports.
Obviously, when I became the minister, we were looking at all this information; we had concerns, and we started looking at the possibilities. We really came to the conclusion late last year or early this year. We were conducting some tests that would, we hoped, resolve the technical challenges. Those tests were going to be concluded some time in April 2008, so we said we needed to do our due diligence, we needed to be prudent, and we'd wait until the conclusion of those tests to see if they could resolve the technological challenges, or even make any kind of progress in resolving them.
Those tests were concluded in the middle of April this year, and they provided absolutely no solutions to the technological challenges. The following week our government decided to accept the decision of AECL's board of directors.