and that is that I find that radiologists known as little about -radiographs of pneumoconiosis as general physicians know about the clinical and physiological picture of pneumo coniosis* eminent radiologist in London and he told me that the i radiological side of the-pneumoconioses had been completely; i worked out and there was no further 'cause to. do' any work in j that subject at all.

I Now, the next Important thing is to insure that you get all tne population you're after.

r COMMITTEES LEGAL COMMITTEE Theodore C.

*ltten4fate TRAINING SERVICE School ol Diesel, Tractor and Heavy Equipment Courteay of BENDIX WESTINGHOUSE AIR BRAKE CO.

Proa the standpoint of being able to afford benefit plans, Brake Shoe is not as fortunate as are nany companies, since our payroll costs run around 30jf of our selling price.

62 ing in loss of vacuum.

when using a new material examine the worker at rather ireqnent intervals until they define for themselves: 1.

1957 National Safety Congress mists, fumes, dusts.

1957 National Safety Congress Chemical Industries breathing problems 'would be cuufinrd to underwater or to travel m high altitudes.

.38 121. .

Hair abnormalities (patchy baldness--alopecia areata).

Cataracts.

TABLE (continued) Annuel Lung Cancer Death Ratos per 100, 000 Man-Yoars of exposure by Exposure Category Exposure Category J n m Unknown Over-all Provod 33 23 19 0 25 28.

Other Volumes in this (1959) Series Users of this volume wiU find much value in Hs companion volumes, which offer the complete record of the 47th National Safety Congress!

` Other Volumes in this (1960) Series Users of this volume wifi find much value in iH companion vofumes, which offer the complete record of the 48th National Safety Congress!