Heating .Ventilating Air Conditioning Guide 1939 7.

Heating Ventilating-: Air Conditioning .Guide 1939. 2 # What is the major problem in conditioning hospitals?

Heating Ventilating.

Air System Equipment rSS The Marley Company (Fairfax and Marley Roads,) Kansas City, Kansas Branches or Agents in Principal Cities Spray Nozzles and a Complete Line of Water Cooling Equipment MARLEY NATURAL DRAFT TOWERS Practically unlimited range of closely graduated sizes, entirely shop fabri cated.

Beating Ventilating Air 'Conditioning: Guide l948 '.

Air Conditioning Unit Heaters and Coolers Grinnell Company, Inc.

/ C(.

Air Hygiene Foundation The Air Hygiene Foundation (also known as the Industrial Hygiene Foundation and the Industrial Health Foundation) was created by industrialists in 1936 to allay public concern about silicosis, an often-fatal lung disease caused when workers inhaled silica dust.

fourth fyall ^Meeting Am Hygiene Foundation* of America, Inc.

frO-Dd- Vf i . ii .m.yi IH!

YOU wouldn't choose a horse and carriage in preference to a fine new automobile.

uuOUIAL worn 223-231 Norma Am.

162 PLAINTIFF'S DANGEROUS DUSTS--HAWES 1 EXHIBIT f EPG-11 / DANGEROUS DUSTS'* N.

fUi ^ **< iVit <r*f 1 Asbestos health question perplexes experts When asked to comment on research small that detection is extremely diffi directions before an international con cult and time consuming, placing re ference on the biological effects of in straints on the scope of research that gested asbestos in Durham, N.C., last can be reasonably undertaken.

LUNG CANCER IN ASBESTOS MINERS is tiQ reliable criterion by which one can anticipate carcinogenicity and, as is well known, relatively minute changes in the structure of a chemical carcinogen are suffi cient to diminish or eliminate carcinogenic action.