——— have available, that was perfectly safe. Another service which we tried to vrovide is during the actual production phase, during the operation of the plant, we helped the plent evaluate exposures and we provided them with a oheck service, that is, although they have available to th-mselves people on their own payroll who are ina position to follow the original plans which we laid down, we go back and rewcheck them and insure that they are doing the kind of job which is necessary for the efficient funotioning of an evaluation program and we are very happy to do this because it provides us with a way to keep track of developments in machines - equipment developments and to maintain our date on exposures, The kind of evaluation of exposure that we do, I think, might be interesting to you and I have a couvle of siides which will describe it better than I can tell it, Can I have the first slide? Thie is typical of an air sample, As it happens this one is teing gotten in a it \ beryllium vient and I ean tell by the very large sample that we are using which takes a 58