CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
224	CHEMICAL TECHNICIANS	1.6%	0.0%	98.4%	0.0%	0.0%	3,327
235	TECHNICIANS, N.E.C.	0.0%	0.0%	100.0%	0.0%	0.0%	512
453	JANITORS AND CLEANERS	32.3%	0.0%	67.7%	0.0%	0.0%	487
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	0.0%	0.0%	50.0%	50.0%	0.0%	3,049
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	0.0%	0.0%	100.0%	0.0%	0.0%	26
785	ASSEMBLERS	100.0%	0.0%	0.0%	0.0%	0.0%	5,473
805	TRUCK DRIVERS, LIGHT	100.0%	0.0%	0.0%	0.0%	0.0%	734
889	LABORERS, EXCEPT CONSTRUCTION	0.0%	0.0%	100.0%	0.0%	0.0%	165
SUBTOTAL		46.5%	0.0%	42.3%	11.0%	0.0%	13,773
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
453	JANITORS AND CLEANERS	100.0%	0.0%	0.0%	0.0%	0.0%	227
719	MOLDING AND CASTING MACHINE OPERATORS	25.0%	25.0%	50.0%	0.0%	0.0%	2,723
756	MIXING AND BLENDING MACHINE OPERATORS	0.0%	100.0%	0.0%	0.0%	0.0%	142
SUBTOTAL		29.3%	26.6%	44.0%	0.0%	0.0%	3,092
FABRICATED METAL PRODUCTS (SIC 34)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
637	MACHINISTS	0.0%	0.0%	100.0%	0.0%	0.0%	803
643	BOILERMAKERS	0.0%	0.0%	100.0%	0.0%	0.0%	288
SUBTOTAL		0.0%	0.0%	100.0%	0.0%	0.0%	1,091
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
756	MIXING AND BLENDING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	657
769	SLICING AND CUTTING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	14
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	671
TRANSPORTATION EQUIPMENT (SIC 37)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
797	PRODUCTION TESTERS	100.0%	0.0%	0.0%	0.0%	0.0%	147
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	147
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
677	OPTICAL GOODS WORKERS	0.0%	0.0%	100.0%	0.0%	0.0%	826
SUBTOTAL		0.0%	0.0%	100.0%	0.0%	0.0%	826
BUSINESS SERVICES (SIC 73)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
073	CHEMISTS, EXCEPT BIOCHEMISTS	0.0%	0.0%	0.0%	100.0%	0.0%	578
216	ENGINEERING TECHNICIANS, N.E.C.	0.0%	0.0%	66.7%	33.3%	0.0%	21
235	TECHNICIANS, N.E.C.	0.0%	0.0%	33.3%	66.7%	0.0%	38
SUBTOTAL		0.0%	0.0%	4.1%	95.8%	0.0%	637
HEALTH SERVICES (SIC 80)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
069	PHYSICISTS AND ASTRONOMERS	0.0%	0.0%	100.0%	0.0%	0.0%	1,354
073	CHEMISTS, EXCEPT BIOCHEMISTS	0.0%	0.0%	0.0%	100.0%	0.0%	217
078	BIOLOGICAL AND LIFE SCIENTISTS	100.0%	0.0%	0.0%	0.0%	0.0%	207
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	100.0%	0.0%	0.0%	0.0%	0.0%	1,313
208	HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C.	0.0%	0.0%	100.0%	0.0%	0.0%	1,625
224	CHEMICAL TECHNICIANS	100.0%	0.0%	0.0%	0.0%	0.0%	659
SUBTOTAL		40.5%	0.0%	55.4%	4.0%	0.0%	5,375
TOTAL		40.3%	3.2%	47.3%	9.1%	0.0%	25,612
RELATED PAGES: Estimates by SIC, Estimates by Occupation, Estimates by Occupation within SIC
ABBREVIATIONS: Resp Prot = Respiratory Protection Other PPE = Personal Protective Equipment Other Than Respiratory Protection Vent = Ventilation

*(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 estimated numbers of exposures, 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. (4) For a given occupation, the estimated number of potential exposures is not necessarily equal to the estimated total number of potentially exposed workers. For example, a worker may be exposed to the same agent from multiple sources; thus, it is not the worker that is controlled but the exposure. (5) The presence or absence of controls does not imply that controls are necessary or required. The estimates and the controls are strictly based on observations associated with potential exposures.