Air System Equipment Refrigerating Machinery Baker Refrigeration Corporation , SALES AND SERVICE IN PRINCIPAL CITIES South Windham, Maine Omaha, Nebraska Cable Address: BAKERICE BUILDERS OF DEPENDABLE REFRIGERATION EQUIPMENT SINCE 1905 PRODUCTS: Ammonia Compressors; Self-Contained Ammonia Units; Self-Con tained "Freon-12" Units; Shell and Tube Condensers, Vertical or Horizontal; Refrige ration Valves and Fittings; Water or Brine Coolers, Shell and Tube or Multi-Unit Type; Coils and Cooler Units of all sizes; Automatic Refrigeration Controls and Accessories; Evaporative Type Condensers.

Heating Systems Burners, oa S.

Insulation (Armstrong V CORK CO M PA N V Lancaster, Pennsylvania Distbict Oetices in Majob Cities Low-Temperature Insulations Corkboard--Moisture resistant, strong, durable, lightweight, easy to handle.

184 Air System Equipment Air Fia< THE GEORGE EVANS CORPORATION MOLINE, ILLINOIS Evans Lifelong Air and Grease Filters All Aluminum . . .

industrial Hygiene Digest - August, 19U9 962 Radioactivity of Dust.

tup and pleural membranes at well at cancers.

TUMORS OF THE ALIMENTARY SYSTEM 337 tunity is afforded for any carcinogenic substances, possibly contained in the digested material, to exert their specific action upon the mucosa.

TUMORS OF THE ALIMENTARY SYSTEM 367 Stahr, H., Zentralbl. f. allg. path. vi. path.

:' .s' \) INTRODUCTION During January,, :f989| I was contacted by Mr.

TABERSHAW--INDUSTRIAL HYGIENE IN WESTERN ZONE OF GERMANY 313 30 Cancer of the lungs Establishment producing alkaline chromates and chrome colors 31 Diseases of the lower parts of the respiratory system (trachea and lungs) caused by slag Slag fertilizer mixing enterprises, and those which store and ship Thomas slag dust--all enterprises 32 Diseases of the lower parts of the respiratory system caused by aluminum and its compounds 33 Schneeberger's lung disease Ore-mining enterprises in the Erzgebirge, a mountain range on the frontier between Saxony and Bohemia; metallurgical industries; weaving mills 34 Deafness or impairment of hearing (otitis interna) caused by noise 35 Cataract Enterprises which produce and work up glass, metallurgical enterprises, enterprises of the chemical industry. 36 Damages of the cornea caused by benzoquinone Enterprises which produce and work up glass, metallurgical enterprises, enter prises of the chemical industry 37 Nystagmus of miners^ Mining enterprises 38 Worm disease of miners caused by Ancylostoma duodenale or Strongyloides stercoralis (Anguillulla iptestinalis) 39 j J ( Communicable diseases Hospitals, including lying-iri hospitals, medical and nursing establishments and other institutions, such as health resorts; furthermore, welfare institutions and activities of the "public and free" type; health departments; laboratories occupied with research and experimenting in natural sciences and medicine l 40 Leptospiral jaundice, brucellosis (Bang's disease)., gangrene of the spleen, and other ; diseases which can be transmitted from animals to men : Keeping of animals, as well as activities which bring workers into closer or closest ; contact with animals, animal parts, products or secretions and are likely to lead to { disease.

asbwtosis 107 cotton, wool and flax.

Johns-Manville FINISHED PRODUCT SPECIFICATION PRODUCT: SUPERS FURNACE BLOCKS (PUIB) SUFEBHC FURNACE BLOCK (SHXAT1S) V.

"corporations grow... in thepersonal shadow ofone man" In 1893. just one year after the first gasoline-powered American automobile had rattled and backfired its way to start a new U.S. industry, and the same year that Henry Ford was building his first car, the Manhattan Rubber Manufacturing Company was established in Passaic.

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