amount to a great deal. There is some revenue from assays and from the sale of publications. As a matter of fact, I have under consideration at the present time making a charge for services in connection with ore-dressing processes. If a man comes in with an ore that he has had difficulty in working out a process for, and we take that in hand and work out a process for it, I think a charge could quite legitimately be made for that service. That is under consideration now.