SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
16	HEAVY CONSTRUCTION CONTRACTORS	2,235
17	SPECIAL TRADE CONTRACTORS	771
20	FOOD AND KINDRED PRODUCTS	616
22	TEXTILE MILL PRODUCTS	602	43
23	APPAREL AND OTHER TEXTILE PRODUCTS	6,134	5,761
26	PAPER AND ALLIED PRODUCTS	7,623	482
27	PRINTING AND PUBLISHING	764	153
28	CHEMICALS AND ALLIED PRODUCTS	1,013	79
29	PETROLEUM AND COAL PRODUCTS	795
30	RUBBER AND MISC. PLASTICS PRODUCTS	20
33	PRIMARY METAL INDUSTRIES	11,190	109
34	FABRICATED METAL PRODUCTS	9,304	916
35	MACHINERY, EXCEPT ELECTRICAL	9,086	195
36	ELECTRIC AND ELECTRONIC EQUIPMENT	12,045	6,815
37	TRANSPORTATION EQUIPMENT	16,167	135
38	INSTRUMENTS AND RELATED PRODUCTS	21	16
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	156
41	LOCAL AND INTERURBAN PASSENGER TRANSIT	4,547
45	TRANSPORTATION BY AIR	937	363
49	ELECTRIC, GAS, AND SANITARY SERVICES	5,186
50	WHOLESALE TRADE - DURABLE GOODS	1,875
80	HEALTH SERVICES	6,834	6,360
TOTAL		97,924	21,427

*(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.