SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
15	GENERAL BUILDING CONTRACTORS	235
16	HEAVY CONSTRUCTION CONTRACTORS	3,774
17	SPECIAL TRADE CONTRACTORS	3,357
21	TOBACCO MANUFACTURERS	10	1
24	LUMBER AND WOOD PRODUCTS	37
27	PRINTING AND PUBLISHING	4,155	114
28	CHEMICALS AND ALLIED PRODUCTS	181	30
32	STONE, CLAY, AND GLASS PRODUCTS	18
33	PRIMARY METAL INDUSTRIES	58
34	FABRICATED METAL PRODUCTS	38	3
35	MACHINERY, EXCEPT ELECTRICAL	293	164
36	ELECTRIC AND ELECTRONIC EQUIPMENT	1,731	148
37	TRANSPORTATION EQUIPMENT	2,860	169
38	INSTRUMENTS AND RELATED PRODUCTS	3,704	1,246
73	BUSINESS SERVICES	10,054	1,315
80	HEALTH SERVICES	3,869	2,826
TOTAL		34,466	6,035

*(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.