9 Mellon Institute of Industrial Research UNIVERSITY OF PITTSBURGH PLAINTIFF'S EXHIBIT IHF-353 PROGRESS REPORT for the week er.ded February 11, 19-14 INDUSTFIAL HYGI, Subjects under | which report is Jc; he indexed!

Vol. 6.

TOP OIL SEEPAGE!

HEATINC VENTILATING AIR CONDITIONING CUIDE 1940 Temperature Deo F Table 1.

~ HEAT1NC VENTILATING AIR CONDITIONING GUIDE 1940 Table 2.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1940 be used.

HEATING VENTILATING AIR CONDITIONING CUIDE 1940 combustion are not cooled to the dew-point and the higher calorific value cannot be obtained.

HEATING VENTILATING AIR CONDITIONING CUIDE 1940 temperatures exist.

HEATINC VENTILATING AIR CONDITIONING CUIDE 1940 GENERAL REQUIREMENTS In general, air conditioning apparatus for industrial purposes must be capable of absorbing heat from various sources such as machinery power, electric lights, people, sunlight and chemical reaction; of warming or cooling to any desired temperature, and of providing ample air supply at all times.

HEATING VENTILATING AIR CONDITIONING GUIDE 1940 Fig. 2.'

HEATINC VENTILATING AIR CONDITIONING GUIDE 1941 combustion are not cooled to the dew-point and the higher calorific value cannot be obtained.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 19.

HEATING VENTILATING AIR CONDITIONING GUIDE 1941 obtain, as, for instance, in railway air conditioning.

HEATINC VENTILATING AIR CONDITIONING CUIDE 1941 heavy traffic hours and under atmospheric conditions favorable to con centration, the air of congested streets is found to contain enough CO to menace the health of those exposed over a period of several hours, par ticularly if their activities call for deep and rapid breathing.

HEATINC VENTILATING AIR CONDITIONING GUIDE 1942 Table 4.