SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	875
15	GENERAL BUILDING CONTRACTORS	1,313
16	HEAVY CONSTRUCTION CONTRACTORS	3,618
17	SPECIAL TRADE CONTRACTORS	9,939
20	FOOD AND KINDRED PRODUCTS	4,046	1,544
22	TEXTILE MILL PRODUCTS	396	184
24	LUMBER AND WOOD PRODUCTS	323	194
25	FURNITURE AND FIXTURES	87
27	PRINTING AND PUBLISHING	2,263	484
29	PETROLEUM AND COAL PRODUCTS	56
30	RUBBER AND MISC. PLASTICS PRODUCTS	205
33	PRIMARY METAL INDUSTRIES	350
34	FABRICATED METAL PRODUCTS	1,558	45
35	MACHINERY, EXCEPT ELECTRICAL	5,221	230
36	ELECTRIC AND ELECTRONIC EQUIPMENT	724	28
37	TRANSPORTATION EQUIPMENT	668	162
38	INSTRUMENTS AND RELATED PRODUCTS	21
42	TRUCKING AND WAREHOUSING	405
49	ELECTRIC, GAS, AND SANITARY SERVICES	16,612
50	WHOLESALE TRADE - DURABLE GOODS	956
72	PERSONAL SERVICES	3,506	1,577
80	HEALTH SERVICES	2,353	1,788
TOTAL		55,495	6,235

*(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.