SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	109
15	GENERAL BUILDING CONTRACTORS	3,331
16	HEAVY CONSTRUCTION CONTRACTORS	205
17	SPECIAL TRADE CONTRACTORS	6,374
20	FOOD AND KINDRED PRODUCTS	157
22	TEXTILE MILL PRODUCTS	644
23	APPAREL AND OTHER TEXTILE PRODUCTS	274	274
24	LUMBER AND WOOD PRODUCTS	1,031
26	PAPER AND ALLIED PRODUCTS	396
28	CHEMICALS AND ALLIED PRODUCTS	2,235	179
30	RUBBER AND MISC. PLASTICS PRODUCTS	2,930	2,672
32	STONE, CLAY, AND GLASS PRODUCTS	1,906	688
33	PRIMARY METAL INDUSTRIES	1,934	55
34	FABRICATED METAL PRODUCTS	653	545
35	MACHINERY, EXCEPT ELECTRICAL	5,914	169
36	ELECTRIC AND ELECTRONIC EQUIPMENT	5,378	1,219
37	TRANSPORTATION EQUIPMENT	6,731	1,266
38	INSTRUMENTS AND RELATED PRODUCTS	1,460	565
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	3,230	129
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	2,836
42	TRUCKING AND WAREHOUSING	1,169
45	TRANSPORTATION BY AIR	6,080	312
49	ELECTRIC, GAS, AND SANITARY SERVICES	978
50	WHOLESALE TRADE - DURABLE GOODS	4,324
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	853	427
73	BUSINESS SERVICES	6,529
75	AUTO REPAIR, SERVICES, AND GARAGES	7,878
80	HEALTH SERVICES	363
84	MUSEUMS, BOTANICAL, ZOOLOGICAL GARDENS	1,643	164
TOTAL		77,543	8,665

*(1) By survey design, not all 2-digit SICs were surveyed. (2) The estimates for each 2-digit SIC apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC. Not all SICs were surveyed. (3) When using the estimates, standard errors associated with estimates should be considered. (4) Potential exposures to a chemical agent are categorized as actual (i.e., the surveyor observed the use of the specific agent) or tradename (i.e., the surveyor observed the use of a tradename product known to contain the specific agent). The estimates presented in the table combine both categories.