OIL AND GAS EXTRACTION (SIC 13)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
613	SUPERVISORS, EXTRACTIVE OCCUPATIONS	335
614	DRILLERS, OIL WELL	11,128
617	MINING OCCUPATIONS, N.E.C.	11,231
824	LOCOMOTIVE OPERATING OCCUPATIONS	3,346
878	MACHINE FEEDERS AND OFFBEARERS	6,492
SUBTOTAL		32,532
RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	5,466	137
SUBTOTAL		5,466	137
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
216	ENGINEERING TECHNICIANS, N.E.C.	17	17
768	CRUSHING AND GRINDING MACHINE OPERATORS	67	67
SUBTOTAL		84	84
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
723	METAL PLATING MACHINE OPERATORS	25	7
753	CEMENTING AND GLUING MACHINE OPERATORS	35	35
SUBTOTAL		60	42
TRANSPORTATION EQUIPMENT (SIC 37)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
706	PUNCHING AND STAMPING PRESS MACHINE OPERATORS	516
756	MIXING AND BLENDING MACHINE OPERATORS	387
SUBTOTAL		903
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
677	OPTICAL GOODS WORKERS	2,144	857
SUBTOTAL		2,144	857
WHOLESALE TRADE - NONDURABLE GOODS (SIC 51)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
225	SCIENCE TECHNICIANS, N.E.C.	1,185	474
633	SUPERVISORS, PRODUCTION OCCUPATIONS	1,185
696	STATIONARY ENGINEERS	2,259
804	TRUCK DRIVERS, HEAVY	3,227
889	LABORERS, EXCEPT CONSTRUCTION	4,598
SUBTOTAL		12,454	474
TOTAL		53,643	1,594
RELATED PAGES: Estimates by SIC, Estimates by Occupation

*(1) The estimates for each occupation apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC where the agent was observed. Not all SICs were surveyed, and not all agents were observed in all surveyed SICs. (2) When using the estimates, standard errors associated with estimates should be considered. (3) 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.