| Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS i LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL TOXICOLOGICAL LEGAL-.

Texas.

For Attention The RUBEROID Co.

Co> y ID E N T1 AX, Mello.v Institute of Industrial Research PROGRESS REPORT for the week ended May 25, 1946 INDUSTRIAL KIGIENE FOUNDATION Subjects under which report is to be indexed Industrial Fellowship No. 259-12 3 copies-mede: 1 - Mellon Institute 2 - Industrial Kvgiene_ files Dust counting and size separation techniques were outlined and demonstrated to Mr.

H.

HEATINC VENTILATINC AIR CONDITIONING CUIDE 1940 Table 1.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 Little is known of the identity and physiological effects of the organic matter given off in the process of respiration.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 to heat it until some of the water is vaporized into the air stream.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1940 In exhaust ventilating systems where the air column moves toward the fan, noise due to the higher tip speeds and outlet velocities will not be so readily transmitted back through the air column to the building as when the air column is moving toward the rooms.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 18.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 Table 4.

HEATING VENTILATING AIR CONDITIONING CUIDE 1941 body becomes warmer.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 greater the tendency for condensation to take place on the under side of the roof boards which moisture will drop on to the ceiling.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 most dry filters are cleaned by replacing an inexpensive filter sheet, the useful life of these sheets often may be lengthened by vibrating or vacuum cleaning.

HEATINC VENTILATING AIR CONDITIONING CUIDE 1941 Table 1.