SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	1,199
17	SPECIAL TRADE CONTRACTORS	8,651
30	RUBBER AND MISC. PLASTICS PRODUCTS	1,167	449
34	FABRICATED METAL PRODUCTS	330
35	MACHINERY, EXCEPT ELECTRICAL	101
36	ELECTRIC AND ELECTRONIC EQUIPMENT	255	158
37	TRANSPORTATION EQUIPMENT	2,421
38	INSTRUMENTS AND RELATED PRODUCTS	2,027	978
39	MISCELLANEOUS MANUFACTURING INDUSTRIES	116	46
44	WATER TRANSPORTATION	1,708
80	HEALTH SERVICES	49
TOTAL		18,022	1,630

*(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.