Document vBdgK821agdVMEKr9m3wXmrow

March, 1930 50 The Invisible Hazard eeing is 99 per cent o accident prevention. SThe workman who can see thehazards around him has a chance to take safety precautions. But he cannot protect himself against the treach erous hazard which creeps in and surrounds him silently and invisibly---flammable gas. The U.C.C. Combustible Gas Indicator protects this workman. It does not depend on samples. It is carried into the atmosphere to he tested, and gives immediate warning of the presence of flammable gases. Return the coupon below for booklet describ ing the U.C.C. Indicator and its applications. Distributed by UNION CARBIDE SALES COMPANY [,'ni o/ Union Carbide and Carbon Corporation NEW YORK CHICAGO and BULLARD-DAVIS, INC. SAN FRANCISCO NEW YORK SAN FRANCISCO Union Carbide Sale* Co., Safety Applilnce Department, 30 East 42nd St.. New York, N. Y. Please send me vor new booklet about the U. C C. Combustible Gas Indicator. The U.C.C. Combustible Gas Indicator ..................................... .............. Stmt and Addrtu ...................... ............. When smiting advertisers, please mention XATIOS'AL SAFETV S'Ell'S City. Stat0 ......