SIC	Industry Description (1972)	Total # Employees (Male & Female)	Total # Female Employees
13	OIL AND GAS EXTRACTION	32,531
30	RUBBER AND MISC. PLASTICS PRODUCTS	5,466	137
32	STONE, CLAY, AND GLASS PRODUCTS	84	84
36	ELECTRIC AND ELECTRONIC EQUIPMENT	60	42
37	TRANSPORTATION EQUIPMENT	903
38	INSTRUMENTS AND RELATED PRODUCTS	2,144	857
51	WHOLESALE TRADE - NONDURABLE GOODS	12,453	474
TOTAL		53,641	1,594

*(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.