did not lead to any adverse effect, j { We find, however, that thv evidence is quite sufficient to i warrant the Secretary's choice.

Chronic --Protracted inhalation of air contaminants may lead to their accumulation in the lungs, a condition which may be seen as dense areas on chest x-rays.

Association of American Railroads, leading to improvements in car construction.

INTENTIONAL MISUSE BY DELIBERATELY CONCENTRATING AND INHALING THE CONTENTS MAY LEAD TO ADDICTION AND MAY BE HARMFUL OR FATAL -SEE FOOTNOTE C ACGIH TLV: 100 PPM (375 MGW3) TWA. 150 PPM (560 MG M3) STEL OSHA PEL 100 PPM (375 MS/M3) TWA; 150 PPM {560 MG/M3} STEL NlOSH DOCUMENT NUMBER. 73-11023 1330-20-7 "XYlilE 10-30 NOTE DEVISED OSHA PEL CAN CAUSE LIVER DAMAGE CAN CAUSE KIDNEY DAMAGE CAN CAUSE CENTRAL NERVOUS SYSTEM DEGRESSION SIGNS AND SYMPTOMS MAY INCLUDE HEADACHE.

:04G6 FEDERAL REGULATIONS .nan 1 percent asbestos on n tlry weight waste material which Is generated by any asbestos-containing waste mate basis.

Welder's goggles with filter lenses are available for such opera tions as oxyacetylene welding, cut ting, lead burning, and braz ing.

. *' 'GS Fuller** Hot Vater Vail Finish Tkb|pouiae>, Pareh mi Stw Pilot. ood PWiifcfilt'WHITE LEAD.

This applies to lead burner work and tank cleaning. 3.

Thus aTen limited expo sures to high levels leads to continuing presence of inhaled asbestos particles er - over -

It la aaaaatlal Cbmfkn that wa gar together aad craaafar tha work lamlwad la tha ramlnlng lm laad fomaladsm to people la tha leads lalm Croup for eoaplotlea.

Further sampling and analysis indicated that PCBs were present in sediments in drainage ditches leading from the plant and lower levels were present in soils in the vicinity of the ditches.

Thus even limited expo sures to high levels leads to continuing presence of inhaled asbestos particles or - over - SlSilliii PRODUCED J5Y FORD IN PRODUCED BY FORD CCSMJiriaMKWWIiWCT'ainitl.in-iji.'.Ti - 105584 SCF-ALLF-08980

Carty-Moore No. 44 Concrete Inserts have long been used by leading heating contractors and are designed to meet the most exacting requirements.

Paracoil Heat Exchange Products are preferred by many leading industrial, naval and building engineers.

In addition to work at the Society's laboratory, a substantial part of the research program has been carried on through the medium of cooperative agreements with leading educational institu tions of the United States and Canada.