Document 2JQaDEejn4Onev7nDb3a6vnOR

SCHOOL OP Mires SBth July, 1#0. Lear Dr. Mcftulty, I hove 'been able to locate the following references to the Midget Xn^inger: B.S.B.M. I. C. 7026: A technique for use of th&J|iJlgftt--lajEUnger U.S.B. tf.-S.I,,i*802: Size of. smallest particles determined In impinger dust counting methods. U.S.B.M.-JU I.i*566* Relation between and precision of duet counts from siimltancoae Impinger, Midget ImpInger, Eleetire precipitator, and Filter paper easples. (not available at K.3.U.). U.S.B.M.-K.I.3360! Midget Impinge* for duet stapling (sot available here). Conveyor 6/55 p.3t Dust prevention at Zinc Corporation and use of the midget implnger to efcsclc dust concentrations Drinker 4 Batch (2nd Edn i95k) "Industrial Dost" pp.150-155 plus extensive bibliography. "Pneumoconiosis Abstrstts* Vols. 1, 2, and 3t Various abetroots of article referring directly and indirectly to impingere and midget impIngere. In addition there are some references to the milling of asbestos: Can, I.M.M. Bull, fi/55 p.i*86t "Asbestos Milling at Jeffrey Mill of Canadian Johne-Many1 lie, Quebec." Of the above, probably Drinker send Batch and the O.SJ3.M. publications give most Information. Yours sincerely. Sd. M.K. Cuartermaine. WV-004079