Mr. P.J. Ryan:

This particular process would probably be controlled by the big cement producers, which already have very tight quality assurance, QA, processes. It is probably different from what happened with the mica issue, where there were many smaller concrete block producers. The controls just may not have been there. Regarding the entities that would be doing this at scale, not everybody would be permitted to do this. The controls there would be tighter than they were with concrete blocks.