I will have to confirm and get back to the chair and the clerk of the committee on the answer to the first part of your question, but at the current time, it's my belief that the 15-year average is with reference to critical minerals being discovered as part of exploration and mines actually creating first production.
To the second part of your question, on what the impediments are, again, unfortunately, I will have to note that our engagement with our members of the critical minerals council is at its very early stages. I'll be reporting back to the committee on any regulatory or funding issues that slow production in the space.