Document JrxBGQZJOE2X9R3YjbkpBGpjv

November 25, 19^7 Mr William E* McCormick, Medical Division, 1'lxe E . 7 . Goodrich Company, Akron, Ohio . ' Dear Mr-. McCormick: f. I send you herewith the.analytical results on the urine and blocc .of. the two. men referred tc In your letter of November U . In both instances the results.arc loner' than they vere- formerly. Indeed both men have shown a gratifying improvement, in terms of a return toward normal levels of'lead concentration in both blood and urine. from the fact that this degree of change has occurred so promptly, 'I should feel that neither of these men had a very long or very serious t y p e 'of l o a d :exposure - Whenever an individual has had prolonged and highly dangerous exposure, there is not only, a con siderable elevation o f 'the lead concentration in the urine, but these concentrations tend to remain rather high fo '* con:-d^ranie . periods of ti m e . The. lack of s u c h an effect in these -instances argues for- a rather short and relatively insignificant period of exposure. - Incidentally the agreement -between the tvo results on the blood oi Moled or-makes'-these'results entirely satisfactory, our only 'problem in connection with- them, would have occurred If they had disagreed. . Sincerely -yours, KAK ef In c . Kobert A. K e h o e , M. 1. K, 0004222