RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
224	CHEMICAL TECHNICIANS	0.0%	0.0%	100.0%	0.0%	0.0%	44
633	SUPERVISORS, PRODUCTION OCCUPATIONS	100.0%	0.0%	0.0%	0.0%	0.0%	34
756	MIXING AND BLENDING MACHINE OPERATORS	0.0%	0.0%	89.6%	10.4%	0.0%	330
779	MACHINE OPERATORS, NOT SPECIFIED	0.0%	0.0%	100.0%	0.0%	0.0%	78
798	PRODUCTION SAMPLERS AND WEIGHERS	100.0%	0.0%	0.0%	0.0%	0.0%	68
SUBTOTAL		18.4%	0.0%	75.3%	6.1%	0.0%	554
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
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%	251
549	NOT SPECIFIED MECHANICS AND REPAIRERS	100.0%	0.0%	0.0%	0.0%	0.0%	9
785	ASSEMBLERS	100.0%	0.0%	0.0%	0.0%	0.0%	146
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	406
TRANSPORTATION EQUIPMENT (SIC 37)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
215	MECHANICAL ENGINEERING TECHNICIANS	100.0%	0.0%	0.0%	0.0%	0.0%	27
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	100.0%	0.0%	0.0%	0.0%	0.0%	9
515	AIRCRAFT MECHANICS, EXC. ENGINE	100.0%	0.0%	0.0%	0.0%	0.0%	1,356
684	MISCELLANEOUS PRECISION WORKERS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	494
785	ASSEMBLERS	100.0%	0.0%	0.0%	0.0%	0.0%	692
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	2,578
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
633	SUPERVISORS, PRODUCTION OCCUPATIONS	100.0%	0.0%	0.0%	0.0%	0.0%	282
785	ASSEMBLERS	100.0%	0.0%	0.0%	0.0%	0.0%	471
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	753
TRANSPORTATION BY AIR (SIC 45)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
365	STOCK AND INVENTORY CLERKS	100.0%	0.0%	0.0%	0.0%	0.0%	114
453	JANITORS AND CLEANERS	100.0%	0.0%	0.0%	0.0%	0.0%	3,800
508	AIRCRAFT ENGINE MECHANICS	100.0%	0.0%	0.0%	0.0%	0.0%	795
515	AIRCRAFT MECHANICS, EXC. ENGINE	100.0%	0.0%	0.0%	0.0%	0.0%	605
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	5,314
TOTAL		95.2%	0.0%	4.3%	0.3%	0.0%	9,605
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.