SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	323
15	GENERAL BUILDING CONTRACTORS	6,048
17	SPECIAL TRADE CONTRACTORS	10,169
20	FOOD AND KINDRED PRODUCTS	2,058
21	TOBACCO MANUFACTURERS	2
22	TEXTILE MILL PRODUCTS	156
24	LUMBER AND WOOD PRODUCTS	45
26	PAPER AND ALLIED PRODUCTS	2,400
27	PRINTING AND PUBLISHING	1,206
28	CHEMICALS AND ALLIED PRODUCTS	3,916	24
30	RUBBER AND MISC. PLASTICS PRODUCTS	13,869	6,299
32	STONE, CLAY, AND GLASS PRODUCTS	5,496	17
33	PRIMARY METAL INDUSTRIES	7,855	51
34	FABRICATED METAL PRODUCTS	7,124	201
35	MACHINERY, EXCEPT ELECTRICAL	5,042	1,482
36	ELECTRIC AND ELECTRONIC EQUIPMENT	3,929	1,003
37	TRANSPORTATION EQUIPMENT	5,370	209
38	INSTRUMENTS AND RELATED PRODUCTS	1,630	962
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	1,213	232
40	RAILROAD TRANSPORTATION	44
42	TRUCKING AND WAREHOUSING	1,020
45	TRANSPORTATION BY AIR	131
49	ELECTRIC, GAS, AND SANITARY SERVICES	1,744
50	WHOLESALE TRADE - DURABLE GOODS	209
73	BUSINESS SERVICES	3,660	509
76	MISCELLANEOUS REPAIR SERVICES	45
80	HEALTH SERVICES	4,054	2,609
TOTAL		88,778	13,598

*(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.