SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	3,053
15	GENERAL BUILDING CONTRACTORS	7,130
16	HEAVY CONSTRUCTION CONTRACTORS	6,091	100
17	SPECIAL TRADE CONTRACTORS	11,518
20	FOOD AND KINDRED PRODUCTS	4,701
21	TOBACCO MANUFACTURERS	2
22	TEXTILE MILL PRODUCTS	2,679	15
24	LUMBER AND WOOD PRODUCTS	973
25	FURNITURE AND FIXTURES	180
26	PAPER AND ALLIED PRODUCTS	1,284
27	PRINTING AND PUBLISHING	1,070
28	CHEMICALS AND ALLIED PRODUCTS	4,153	16
29	PETROLEUM AND COAL PRODUCTS	725
30	RUBBER AND MISC. PLASTICS PRODUCTS	1,640
31	LEATHER AND LEATHER PRODUCTS	126
32	STONE, CLAY, AND GLASS PRODUCTS	3,072	17
33	PRIMARY METAL INDUSTRIES	13,059	64
34	FABRICATED METAL PRODUCTS	22,260	21
35	MACHINERY, EXCEPT ELECTRICAL	22,444
36	ELECTRIC AND ELECTRONIC EQUIPMENT	1,479	65
37	TRANSPORTATION EQUIPMENT	6,231
38	INSTRUMENTS AND RELATED PRODUCTS	110
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	1,472
40	RAILROAD TRANSPORTATION	240
42	TRUCKING AND WAREHOUSING	3,358
46	PIPE LINES, EXCEPT NATURAL GAS	8,085
49	ELECTRIC, GAS, AND SANITARY SERVICES	4,151	116
50	WHOLESALE TRADE - DURABLE GOODS	12,034	247
51	WHOLESALE TRADE - NONDURABLE GOODS	1,359
55	AUTOMOTIVE DEALERS & SERVICE STATIONS	234
73	BUSINESS SERVICES	78
76	MISCELLANEOUS REPAIR SERVICES	6,069
80	HEALTH SERVICES	1,492
TOTAL		152,570	660

*(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.