PRINCIPLES OF GUARDING TABLE 22-C SPECIFICATIONS OF GUARDS FOR HORIZONTAL OVERHEAD BELTS, ROPES, AND CHAINS 7 FT OR MORE ABOVE FLOOR OR PLATFORM For Belt Widths 10 to 14 in. 14 to 24 in.

MACHINE TOOLS should be in accordance with manufactur ers' recommendations Disks and wheels taken out of long storage should be given the "ring" test, followed by a check for rec ommended speed, and a speed test on the machine on which they are to be mounted Checking the speed of vitrified wheels is especially important--some are designed only for low-speed use.

NATIONAL PURCHASE CONTRACTS WHICH RELATE TO CORPUS CHRIST!

EPIMENIO CABRERA; AND JESUS IGNACIO CHAVERA IN THE DISTRICT COURT OF VS.

39CHAPTER INDUSTRIAL HYGIENE The industrial hygienist: definitions . . . scope . . . function39-2 Dusts, fumes, and mists: sources . . . magnitude of particles dispersion . . separation m auborne dusts . .. mechanism of inhalation . . retention of dust . .. size of particles inhaled39-3 Physiological effects of dusts, fumes, and mists: pneumoconioses tone dusts and >"" 39-6 Orgonic solvents: labeling . . . general physiological effects . degree of seventy of solvent hazards . .

i;-i Qi -H d o !

ELEMENTS OF INDUSTRIAL TOXICOLOGY malm with the skm can be largely prevented by protechve clothing and by water insolu ble protective creams Splashes of the liquid should be washed off immediately.

ELEMENTS OF INDUSTRIAL TOXICOLOGY Magnesium is one of the light metals used possible to a dust separator which will re as a construction material In the early move the magnesium powder and trap it days of its industrial use, there were nu under water without permitting it to get merous laboratory reports that fine particles of magnesium, and particularly of magnesi um alloys, left in wounds would react with die tissue fluid to produce bubbles of hydro gen gas that would cause severe tissue in jury.

INDUSTRIAL NOISE Variability in the test environment is caused mainly by changing ambient noise levels in the testing area Unless test areas are specially treated to reduce ambient noise levels below certain specified values, the measured thresholds of persons with normal hearing may be masked The usual ambient noises m test environments are predominantly low frequency sounds, and most of the masking is at 1,000 c and below It is usually easy to detect masked low fre quency thresholds on audiograms made m poorly sound-treated environments These audiograms show normal or near normal hearing at 1,000 c and hearing losses as large as 10 db at 250 c and at 500 c Thresholds at 1,000 c may show the effect of masking if the ambient levels are mod erately high.

REUBEN BELLOWS, et al VS.

WELDON R.

D-1004 Seattle Industrial Relations Report April, 1974 Page - 2 - Equal Employment Opportunity (EEO) No problems this month.

Union Carbide Sales of Asbestos to Kaiser Gypsum Antioch, California UCASB00160284 UNION CARBIDE CORPORATION MINING AND METALS DIVISION COPY OF INVOICE t2iqa!

55th ANNUAL NATIONAL SAFETY CONGRESS V- Papers Delivered in the < CONSTRUCTION AND PUBLIC EMPLOYEES SESSIONS Five Years of Future Dates for the National Safety Congress....................... 4 CONSTRUCTION SESSIONS Report of Year's Activities..................... ^............................