, 10466, RULES AND REGULATIONS Title 29--LABOR Chapter XVII--Occupational Safety and Health Administration, Depart ment of Labor PART 1-910--OCCUPATIONAL SAFETY AND HEALTH STANDARDS National Consensus Standards and Established Federal Standards Pursuant to authority in sections 6(a) and 8(g) of the Williams-Steiger Occu pational Safety and Health Act of 1970 (84 Stat. 1593,' 1600: 29 U.S.C. 655, 657), Chapter XVII of Title 29 of the Code of Federal Regulations, established on April 13, 1971 (36 F.R. 7006), is hereby amended by adding thereto a new Part 1910 to read as set forth below.

Modifiers are used for a number of purposes; they are included to increase brake shoe "density,'' making the brake surface able to withstand high pressures (e.g . barite): they are included as "lubricants" to reduce the coefficient of friction along the brake surface, and thereby prevent "grabbing" (e.g., lead compounds); they act as "friction agents" increasing the coefficient of friction and enhancing the braking action of the shoe (e g., brass chips); they act as internal "abrasives."

CONFIDENTIAL Interoffice Communication To R.

JOSEPH E, KELLER JEHOME II HECKMAN CHARLES M MEEHAN willtam H BOKGIIESANT JR HODKIIT R T1ERNAN WAYNE V BLACK DAVID L niLL MARTIN W, BERCOVTC1 EDWIN D Sl'JEVACK PETER M NEMKOV JOSEPH E HADLEY CAROLE C HARRIS WILLIAM W PI!

Hunt, National Lead Company V.

The effects on both the addict and the pregnant woman are similar: delays in treat- ment can lead to psychological and physical risks and even death.

It was agreed that environmental analysis leading to control of PVC compounding, mixing, and fabrication will be initiated and expanded. 5.

This supporting data will be a prerequisite to meaningful comments on costs and lead time required to comply with this proposal.

In advanced stages this leads to an interhepatic block (most like ly because of the hlnderanees in the height of the portal system, possibly similar to a sinusoidal block), with esophagus varices.

SOUTH CHARLESTON PLANT UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS P.O.

The results dealing with lead-chromate pigments and 1cad-molybdcnum chromate pigments were made known in April 1973 (5-13). i Data published a few months ago (14) and on going epidemiological investigations indicate and excessive incidence of bronchial carcino mas among workers producing chromium pigments.

* L.

An estimated 118 million pounds of asbestos are used annually in the U.S. for the production of brake friction materials.3 In addition to asbestos, other materials which are used in the manufacture of b^ake linings such as lead, zinc, copper, and iron pose other potentials for exposures.

PRESTONE anti-freeze, one of Union Carbide's best-known products, has been the leading brand on the market for 45 years.

Gastroenterology 66:450-464, 1974 Copyright 1974 by The Williams & Wilkins Co.