1* Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL ' LEGAL - decisions end treads ' MARCH, 1949 (Vol. 13, No. 3) ,INDUSTRIAL HYGIENE FOUNDATION 4400 FIFTH AVENUE PITTSBURGH 13 PA.

992 CHAPTER 43 Virtually all the chemicals used in water conditioning are injurious ,ifr taken internally in large doses.

PLAINTIFF'S EXHIBIT JMMC-306 RECOVERY OF RAW ASBESTOS At The Havelock Mine By Boland- Starkey M.

302 ASRRAE Guide And Data Book Canons of Ethics for Engineers Foreword Honesty, justice, and courtesy form a moral philosophy which, associated with mutual interest among men, constitutes the foundation of ethics.

Kyo < - -SI Digest of Industrial Hygiene - 3.

The type of bearing that we sell to the steel mills is very profit able.

Industrial Hygiene Digest - 34 i August, lou (1) Improved cooperation of the patient, the physician, the employer, am his Terrier, ar.d the State Industrial Commission; (2) Temporary 9'~ transfer of the vorker to another Job; (3) Careful preemployment examine, < tlops.

19--Personal Protective Equipment TABLE 19-A TRANSMITTANCES AND TOLERANCES IN TRANSMITTANCE OF VARIOUS SHADES OF FILTER LENSES Shade Ato Optical Density Min Std Max Luminous Transmittance Max Std Min Maximum Infrared Transmit* lance Maximum Spectral Transmittance in the Ultraviolet and Violet for Four Wavelengths (millimicrons) 313 334 365 405 1 5 017 1 7 026 20 036 25 054 30 0 75 0 214 0 300 0 429 0643 0 857 per cent per cent per cent per cent per cent per cent per cent per cent 026 036 054 0 75 1 07 67 55 43 29 180 61 1 501 37 3 22 8 139 55 43 29 18 0 850 25 20 15 12 90 02 02 02 02 02 08 25 65 07 20 50 05 14 35 03 5 15 02 05 6 40 1 07 50 1 50 60 1 93 70 236 80 2 79 1 286 1 714 2 143 2 571 3 000 1 50 1 93 2 36 279 3 21 8 50 316 1 18 044 0164 518 1 93 0 72 0 27 0100 3 16 1 18 044 0 164 0 061 50 02 02 05 10 25 02 02 02 05 1 5 01 01 01 05 1 3 01 01 01 05 1 0 01 01 01 05 90 3 21 100 364 11 0 4 07 120 4 50 130 4 93 140 5 36 3 429 3 857 4 286 4 714 5 143 5 571 364 4 07 450 4 93 5 36 5 79 0061 0023 0 0085 0 0032 00012 0 0004 0 037 0 0139 0 0052 0 0019 0 00072 0 00027 0 023 0 0085 0 0032 00012 0 00044 0 00016 08 06 05 05 04 03 01 01 005 005 005 005 01 01 0 05 0 05 0 05 0 05 01 01 0 05 005 0 05 0 05 05 05 01 01 01 01 NOTE The values given apply to class I filter glass For class II filter lenses, the transmittances and tolerances are the same with the additional requirement that the transmittance of 589 3 millimicrons shall not exceed 15 per cent of the luminous transmittance Some of the headings in this table have been changed to conform with N8S Letter Circular LC857 Spectral-Transmissive Properties and Use of Eye-Protective Classes Reprinted from National Bureau of Standards Circular 471, 1948 DICHROIC coated glass plate (coating faces chemicals may be provided in a variety of ways, depending upon the hazard Good protection is given by a hood made of chemi cal-resistant material with a glass or plasbc window (Fig 19-20) In all cases, there should be a secure joint between the window and the hood materials Hoods are extremely hot to wear, and can be obtained with air lines for the wearer's comfort When a hood is so supplied, the wearer should have a harness or belt like that on an air line respirator (see Fig 19-30 and -31) for support of the hose A device based on a vortex principle has been developed to provide temperature-conditioned air (See Fig 19-36) If protection is necessary only from limited direct splashes, the wearer can don a face 486 <Fic 19-22 --Diagram shows how "antilaser eyeshield" deflects laser beam

tiinitk uf tl)?

Metals Reserve Company WASHINGTON.

Dr.

PLAINTIFF'S EXHIBIT sjr.

PLAINTIFF'S EXHIBIT STANDARD Oil.

MUJOTUC J. 1 Metropolitan Life Insurance Company Fioducx H.

Canadian ZFuberculosis Jssociation r Pnndtm* HfB CxeClOXMer tmc RIOMT MCMOUKABLC TmC Ca*L or ATMkOMt K.Q.