Heating Ventilating Air Conditioning Guide 1939 J Page Jenkins Bros., 80 White St., New York, N.

r L t i > Heating Ventilating Air Conditioning Guide 1939 U Page Underground Steam Construction Co., 75 Pitts St., Boston, Mass.......................... 1042 Unit Heater and Cooler Co., The, Wausau, Wis....................................................... .. 986 United States Air Conditioning Corp., Northwestern Terminal, Minneapolis, Minn... 884 United States Gauge Co., 44 Beaver St., New York, N.

Insulation Armstrong Cork Company Building Materials Division Lancaster, Pennsylvania ALBANY Atlanta Baltimore Boston Buffalo Charlotte Chicago Cincinnati Cleveland Columbus Dallas Des Moines Detroit Houston Offices Indianapolis Jacksonville Kansas Cm Louisville Milwaukee Minneapolis New York Omaha Philadelphia Pittsburgh Richmond Rochester St.

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SECURITIES AND EXCHANGE COMPASSION WASHINGTON.

Hidden dangers in the air we breathe Particles of certain widely used mineral substances are so small that they can't be stopped by the excellent filter system in our. noses, or by any ordinary means.

Chapter Twelve The Blue Asbestos Industry at Wittenoom in Western Australia: A Short History Lenore Layman THE INDUSTRY* The crocidolite industry at Wittenoom began in 1937 with a rush of prospectors to Wittenoom Gorge on the northern edge of the Hamersley Ranges in the North West of Western Australia The Wittenoom crocidolite industry is regarded as the worst industrial disaster in Australian history, by common consensus.

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Air Conditioning Unit Heaters and Coolers Grinnell Company, Inc.

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i93i TRANSACTIONS National Safety Council Incorporated TWENTIETH ANNUAL SAFETY CONGRESS Chicago October 12 to October 16, 1931 The Hotel Stevens Copyright, 1932, Xationol Safety Council, hie.