SOURCES OF HELP FOR THE SAFETY MAN British Journal of Industrial Medicine (quarterly) British Medical Association Tavistock Square London, W C 1, England American Journal of Nursing (monthly) 10 Columbus Circle New York City 10019 American Association of Industrial Nurses Journal (monthly) American Association of Industrial Nurses 170 East 61st St New York City 10021 Journal of Occupational Medicine (monthly) Industrial Medicine Association 55 East Washington St Chicago, HI 60605 Fire Fire Engineering (monthly) Reuben H Donnelley 466 Lexington Ave New Yoric City 10017 Firemen (monthly) Fire News (bimonthly) NFPA Quarterly National Fire Protection Association 60 Batterymarch St Boston, Mass 02110 FPA Journal (quarterly) Fire Protection Association 31/45 Gresham St London, E C 2 England Many of the state departments of labor and federal agencies publish periodicals which are available upon request With the exception of the state agencies, most of the others are mentioned under the subject headings m this section.

HOPES, CHAINS, AND SLINGS used for sling chains It has high strength, high impact resistance and good abrasion resistance Special purpose alloy chains are made from stainless steel, monel metal, bronze, and other materials They are designed for use where resistance to corrosive substances is required, or where their other special properties are desirable Proof coil chain (also known as common or hardware chain) is used for miscellane ous purposes where failure of the chain would not endanger human life or result m scnous damage to property or equipment Proof coil chain should never be used for slings Working; load limits Table 21-] shows the recommended work ing load limits and the minimum breaking strengths of alloy steel chain The data for other types of chain may be obtained from the NACM specification adopted m August 1961 The tensile strength of alloy steel chain increases m proportion to its hardness (pro duced by heat treating) Resistance to abra sion also increases proportionately with hardness Impact conditions caused by faulty hitches, bumpy crane tracks, and slipping hook-ups can materially add to the stress in the chain If severe impact loading may be encountered, a lower working load limit should be used, regardless of the chain type TABLE 21-K MAXIMUM ALLOWABLE WEAR AT ANY POINT OF LINK Chain sue (ib ) Maximum attowobfo wear (in ) % 3/04 % 5/64 % 7/64 % 9/64 % 5/32 % 11/64 i 3/16 i% 7/32 1% 1/4 1% 9/32 1% 5/16 1% 11/32 I i i t L Fig 21-9 Extreme wear at bearing sur faces Links are turned to detect wear The general strength and working load limits of alloy steel chain are not altered appreciably by low atmospheric tempera tures Cham skngs should preferably be pur chased complete from the manufacturer and, whenever repairs are required, should be sent back to him Inspection Most of the causes of chain failures can be detected before failure occurs if the proper inspection procedure is followed A good inspection plan provides for two inspections, one daily by the personnel using the chain, and the other biannually or oftener by a trained man from the mechani- National Association of Cham Manufac turers, 111 West Washington St, Chicago 21-17

@8 fel QQ b----- 1 O0 Industrial Hygiene Digest April, 196- 352 Long-Term Effects of Sulfur Dioxide Exposure in Pulp Mills.

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Industrial Hygiene Digest May, 1966 first regulation by the Commission was adopted to control the operation of coal refuse disposal areas which often catch fire and emit sulfur dioxide, hydrogen sulfide, and other gases.

o C<3 00 C=3 industrial Hygiene Digest August, 196 800 T rends and Levels of Air Pollution in New York City.

OFFICERS OF THE POWER PRESS AND FORGING SECTION NATIONAL SAFETY COUNCIL 1968-69 General Chairman--Dale E.

1969 National Safety Congress All this costs money, real money, and un less we arc willing to make this investment completely and properly, we should not at tempt to protect at all, for only futility will result.

TABLE 13-A NUMERICAL EXEMPTIONS FOR WORKMEN'S COMPENSATION LAWS JURISDICTIONS MAKING NO NUMERICAL EXEMPTIONS Alaska California Connecticut District of Columbia Hawaii Idaho Illinois' Indiana Iowa Louisiana Maryland Michigan .

V of Chrysotile Asbestos Mine and Mill Workers of Quebec J.

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VLAXNT1SFS EXHIBIT DVP-866 SPIN-tott E. 1. du Pont oc Nemours S Company Wilmington.

PLAINTIFF'S EXHIBIT Cause .No.

ROCKBESTOS WIRE & CABLE CO.

Medical Research Division Esso Research and Engineering Company SUMMARY OF THE CONFERENCE ON "BIOLOGICAL EFFECTS OF ASBESTOS" October 19-20-21, 1964 EP003002 On October 19, 20, and 21, 1964, the Section of Biological and Medical Sciences of The New York Academy of Sciences sponsored a three-day Conference on ''Biological Effects of Asbestos" in New York City.