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Human 'guinea pigs' in the fight against smog

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Order Number	00048352
Title	Human 'guinea pigs' in the fight against smog
Collection ID	Herald Examiner Collection
Location/Accession	HE box 10250.
Date	1956
Physical Description	1 photograph :b&w
Description	In order to find out exactly what must be removed from auto exhaust to reduce the eye irritation in smog, human reactions to various mixtures must be observed under clinical conditions. Breathing the mixtures under plastic masks, members of a panel sit in partitioned compartments, so that they cannot see each other. This prevents one person from being subconsciously influenced by seeing another person's reaction. Panel members are not told whether they are breathing mixtures containing auto exhaust, or just purified air. Neither are they told whether it is irradiated or non-irratiated. Photo dated: July 13, 1956.
Subject	Air--Pollution. Smog--California--Los Angeles. Herald-Examiner Collection photographs.
Format	Photographic prints
Reproduction Information	Images available for reproduction and use. Please see the Ordering & Use page at http://tessa.lapl.org/OrderingUse.html for additional information.
Sub-Collection Name	Los Angeles Herald Examiner Photo Collection