“…Chemicals, petroleum, and coal products Chemicals, petroleum, and coal products (180-201) 10 Rubber, plastics, and leather products Rubber, plastics, and leather products (210-222) 11 Lumber and wood products Lumber and wood products, including furniture (230-242) 12 Metal industries ¶ Metal industries; machinery, except electrical (270-332) 14 Electrical machinery, equipment, and supplies** Electrical machinery, equipment, and supplies; miscellaneous and not specified manufacturing industries (340-350, 391-392) 15 Transportation equipment Transportation equipment (351-370) 17 Trucking and transportation † † Trucking service; transportation, except trucking (400-432) 19 Communications Communications (440-442) 20 Utilities Utilities (460-472) 21 Wholesale ‡ ‡ Wholesale trade, durable goods; wholesale trade, non-durable and not specified goods (500-571) 23 Retail trade § § Department stores, food stores, vehicle dealers, supply and service stores, apparel and accessory stores and other retail trade (580-631, 642-691) 27 Eating and drinking places Eating and drinking places (641) 31 Business services ¶ ¶ Business services, other professional and related services (721-750, 882-892) 32 Repair services Automotive repair and related services, electrical repair shops, miscellaneous repair services (751-760) 33 Private households Private households (761) 34 Lodging places Lodging places (762-770) 35 Personal services Personal services, except private households and lodging (771-791) 36 Entertainment and recreation services Entertainment and recreation services (800-802) 37 Health related*** Offices of health practitioners, hospitals, health services, not elsewhere classified (812-840) 40 Educational services Educational services (842-860) 43 Justice, public order and safety Justice, public order, and safety (910) review by an industrial hygienist (table 1) to have an optimal number of observations in each industrial group for meaningful statistical analysis. The industrial hygienist was blinded to the subject's asthma status.…”