SPECIAL TRADE CONTRACTORS (SIC 17)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
599	CONSTRUCTION TRADES, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	1,155
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	1,155
TEXTILE MILL PRODUCTS (SIC 22)
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%	411
518	INDUSTRIAL MACHINERY REPAIRERS	100.0%	0.0%	0.0%	0.0%	0.0%	335
519	MACHINERY MAINTENANCE OCCUPATIONS	100.0%	0.0%	0.0%	0.0%	0.0%	215
549	NOT SPECIFIED MECHANICS AND REPAIRERS	100.0%	0.0%	0.0%	0.0%	0.0%	139
738	WINDING AND TWISTING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	819
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	1,919
LUMBER AND WOOD PRODUCTS (SIC 24)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
519	MACHINERY MAINTENANCE OCCUPATIONS	100.0%	0.0%	0.0%	0.0%	0.0%	83
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	83
PAPER AND ALLIED PRODUCTS (SIC 26)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
056	INDUSTRIAL ENGINEERS	100.0%	0.0%	0.0%	0.0%	0.0%	16
453	JANITORS AND CLEANERS	0.0%	0.0%	100.0%	0.0%	0.0%	401
519	MACHINERY MAINTENANCE OCCUPATIONS	100.0%	0.0%	0.0%	0.0%	0.0%	14
889	LABORERS, EXCEPT CONSTRUCTION	100.0%	0.0%	0.0%	0.0%	0.0%	41
SUBTOTAL		15.0%	0.0%	84.9%	0.0%	0.0%	472
RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
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%	221
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	221
PRIMARY METAL INDUSTRIES (SIC 33)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
374	MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	5
453	JANITORS AND CLEANERS	100.0%	0.0%	0.0%	0.0%	0.0%	2,174
516	HEAVY EQUIPMENT MECHANICS	100.0%	0.0%	0.0%	0.0%	0.0%	27
518	INDUSTRIAL MACHINERY REPAIRERS	100.0%	0.0%	0.0%	0.0%	0.0%	21
519	MACHINERY MAINTENANCE OCCUPATIONS	100.0%	0.0%	0.0%	0.0%	0.0%	273
544	MILLWRIGHTS	100.0%	0.0%	0.0%	0.0%	0.0%	897
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	45
575	ELECTRICIANS	100.0%	0.0%	0.0%	0.0%	0.0%	62
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	100.0%	0.0%	0.0%	0.0%	0.0%	48
637	MACHINISTS	100.0%	0.0%	0.0%	0.0%	0.0%	145
643	BOILERMAKERS	100.0%	0.0%	0.0%	0.0%	0.0%	40
756	MIXING AND BLENDING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	5
779	MACHINE OPERATORS, NOT SPECIFIED	100.0%	0.0%	0.0%	0.0%	0.0%	630
849	CRANE AND TOWER OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	27
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	4,399
FABRICATED METAL PRODUCTS (SIC 34)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
575	ELECTRICIANS	100.0%	0.0%	0.0%	0.0%	0.0%	93
689	INSPECTORS, TESTERS, AND GRADERS	50.0%	0.0%	0.0%	50.0%	0.0%	143
717	FABRICATING MACHINE OPERATORS, N.E.C.	0.0%	0.0%	100.0%	0.0%	0.0%	1,153
719	MOLDING AND CASTING MACHINE OPERATORS	42.9%	0.0%	0.0%	57.1%	0.0%	167
755	EXTRUDING AND FORMING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	185
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	0.0%	0.0%	100.0%	0.0%	0.0%	105
SUBTOTAL		22.8%	0.0%	68.1%	9.0%	0.0%	1,846
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
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%	355
575	ELECTRICIANS	100.0%	0.0%	0.0%	0.0%	0.0%	81
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	347
724	HEAT TREATING EQUIPMENT OPERATORS	0.0%	0.0%	100.0%	0.0%	0.0%	163
785	ASSEMBLERS	100.0%	0.0%	0.0%	0.0%	0.0%	229
873	PRODUCTION HELPERS	100.0%	0.0%	0.0%	0.0%	0.0%	347
SUBTOTAL		89.2%	0.0%	10.7%	0.0%	0.0%	1,522
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%	276
785	ASSEMBLERS	0.0%	0.0%	100.0%	0.0%	0.0%	650
SUBTOTAL		29.8%	0.0%	70.1%	0.0%	0.0%	926
MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
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%	488
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	855
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	1,343
TRANSPORTATION BY AIR (SIC 45)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
507	BUS, TRUCK, AND STATIONARY ENGINE MECHANICS	100.0%	0.0%	0.0%	0.0%	0.0%	933
508	AIRCRAFT ENGINE MECHANICS	100.0%	0.0%	0.0%	0.0%	0.0%	795
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	1,728
HEALTH SERVICES (SIC 80)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
453	JANITORS AND CLEANERS	0.0%	0.0%	100.0%	0.0%	0.0%	80
SUBTOTAL		0.0%	0.0%	100.0%	0.0%	0.0%	80
TOTAL		82.6%	0.0%	16.2%	1.0%	0.0%	15,694
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.