'ML yen 1<1U INDUSTRIAL HYGIENE FOUNDATION 4400 Fifth Avenue Pittsburgh, Pennsylvania 15213 OFFICERS AND MEMBERS OF .THE BOARD OF TRUSTEE?

Air Conditioning-^'^ GENERAL ELECTRIC AIR CONDITIONING AND COMMERCIAL REFRIGERATION DIVISIONS Bloomfield, New Jersey Atlanta 3.

Air Conditioning Automatic Equipment; Heating and Cooling CHRYSLER ^AIRTIMP A1RTEMP DIVISION OF CHRYSLER CORPORATION, DAYTON, OHIO "PACKAGED" AIR CONDITIONERS AVAILABLE IN 3 and 5 H.

KEN 010177 Kaiser Builder News Front PITTSBURGH RAPID TRANSIT Kaiser Engineers has been selected by the Port Authority of Allegheny County, Pennsylvania, to provide serv ices for the third all new rapid transit system to.be built in the United States in the past half century.

I% Air System Equipment Heat Transfer Surface Aerofin Corporation 410 So.

Air System Equipment Registers and Grilles Air Diffusers W.

Heating Systems Automatic Iron Fireman Manufacturing Company Automatic Firing Equipment for Coal, Oil, Gas Portland, Oregon Cleveland, Ohio Address inquiries to 3166 West 106 St., Cleveland 11, Ohio Retail Branches or Subsidiaries: Chicago, III.; Milwaukee, Wis.; St.

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Air Conditioning Unit Heaters and Coolers Air Conditioning unit Heaters Refrigeration Economics Co., Inc. 1231 Tuscarawas St.

Insulation Reflective American Flange & Manufacturing Co.

i ' Air Conditioning s^um Niagara Blower Company General Sales Office: 405 Lexington Ave.

Heating Systems Pumps Buffalo Pumps, Inc. 450 Broadway, Buffalo, N.

1004 CHAPTER 47 riv.Mi'iJZ j 51953 Guide Periods of Drying1 A typical drying time curve for a wet solid is shown in Fig. 2.

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Air Conditioning Md'liatoS6 Clayton & Lambert Mfg.