National Occupational Exposure Survey, Estimaged Percentages of Controlled and Uncontrolled Potential Exposures to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

National Occupational Exposure Survey
(1981 - 1983)

Estimated Percentages of Controlled and Uncontrolled Potential Exposures to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

Agent Name	METHANE
CAS #	74-82-8
RTECS #	PA1490000
Agent Code	45655

OIL AND GAS EXTRACTION (SIC 13)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

614 DRILLERS, OIL WELL 0.0%
0.0%
0.0%
100.0%
0.0%
4,694

848 HOIST AND WINCH OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
8,072

SUBTOTAL 63.2%
0.0%
0.0%
36.7%
0.0%
12,766

FOOD AND KINDRED PRODUCTS (SIC 20)

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%
101

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
0.0%
0.0%
100.0%
0.0%
92

SUBTOTAL 52.3%
0.0%
0.0%
47.6%
0.0%
193

APPAREL AND OTHER TEXTILE PRODUCTS (SIC 23)

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%
19

SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
19

CHEMICALS AND ALLIED PRODUCTS (SIC 28)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

048 CHEMICAL ENGINEERS 13.6%
0.0%
0.0%
0.0%
86.4%
71

073 CHEMISTS, EXCEPT BIOCHEMISTS 100.0%
0.0%
0.0%
0.0%
0.0%
154

213 ELECTRICAL AND ELECTRONIC TECHNICIANS 0.0%
0.0%
0.0%
0.0%
100.0%
19

224 CHEMICAL TECHNICIANS 18.6%
0.0%
0.0%
61.1%
20.4%
2,245

235 TECHNICIANS, N.E.C. 0.0%
0.0%
50.0%
50.0%
0.0%
23

535 CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS 0.0%
0.0%
0.0%
0.0%
100.0%
45

575 ELECTRICIANS 0.0%
0.0%
0.0%
0.0%
100.0%
16

585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 0.0%
0.0%
0.0%
0.0%
100.0%
32

633 SUPERVISORS, PRODUCTION OCCUPATIONS 12.9%
0.0%
0.0%
0.0%
87.1%
225

637 MACHINISTS 0.0%
0.0%
0.0%
0.0%
100.0%
16

694 WATER AND SEWAGE TREATMENT PLANT OPERATORS 0.0%
0.0%
0.0%
100.0%
0.0%
66

696 STATIONARY ENGINEERS 100.0%
0.0%
0.0%
0.0%
0.0%
123

756 MIXING AND BLENDING MACHINE OPERATORS 0.0%
0.0%
100.0%
0.0%
0.0%
129

779 MACHINE OPERATORS, NOT SPECIFIED 0.0%
0.0%
100.0%
0.0%
0.0%
5,878

783 WELDERS AND CUTTERS 0.0%
0.0%
0.0%
0.0%
100.0%
35

SUBTOTAL 8.0%
0.0%
66.3%
15.9%
9.6%
9,077

PETROLEUM AND COAL PRODUCTS (SIC 29)

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%
81

073 CHEMISTS, EXCEPT BIOCHEMISTS 100.0%
0.0%
0.0%
0.0%
0.0%
343

224 CHEMICAL TECHNICIANS 26.3%
0.0%
0.0%
73.7%
0.0%
2,103

225 SCIENCE TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
322

453 JANITORS AND CLEANERS 13.3%
0.0%
0.0%
86.7%
0.0%
4,541

547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 0.0%
0.0%
0.0%
100.0%
0.0%
2,386

549 NOT SPECIFIED MECHANICS AND REPAIRERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,127

567 CARPENTERS 100.0%
0.0%
0.0%
0.0%
0.0%
403

575 ELECTRICIANS 100.0%
0.0%
0.0%
0.0%
0.0%
725

585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,449

593 INSULATION WORKERS 100.0%
0.0%
0.0%
0.0%
0.0%
794

633 SUPERVISORS, PRODUCTION OCCUPATIONS 100.0%
0.0%
0.0%
0.0%
0.0%
322

637 MACHINISTS 100.0%
0.0%
0.0%
0.0%
0.0%
966

699 MISCELLANEOUS PLANT AND SYSTEM OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
1,325

756 MIXING AND BLENDING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
127

757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
3,528

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
403

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 100.0%
0.0%
0.0%
0.0%
0.0%
28

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 28.1%
0.0%
0.0%
71.9%
0.0%
20,585

783 WELDERS AND CUTTERS 100.0%
0.0%
0.0%
0.0%
0.0%
725

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 100.0%
0.0%
0.0%
0.0%
0.0%
322

878 MACHINE FEEDERS AND OFFBEARERS 100.0%
0.0%
0.0%
0.0%
0.0%
322

SUBTOTAL 47.1%
0.0%
0.0%
52.8%
0.0%
42,927

STONE, CLAY, AND GLASS PRODUCTS (SIC 32)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

073 CHEMISTS, EXCEPT BIOCHEMISTS 100.0%
0.0%
0.0%
0.0%
0.0%
6

235 TECHNICIANS, N.E.C. 100.0%
0.0%
0.0%
0.0%
0.0%
12

SUBTOTAL 100.0%
0.0%
0.0%
0.0%
0.0%
18

PRIMARY METAL INDUSTRIES (SIC 33)

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%
247

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 0.0%
0.0%
0.0%
0.0%
100.0%
420

SUBTOTAL 37.0%
0.0%
0.0%
0.0%
62.9%
667

MACHINERY, EXCEPT ELECTRICAL (SIC 35)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

216 ENGINEERING TECHNICIANS, N.E.C. 0.0%
0.0%
0.0%
50.0%
50.0%
209

724 HEAT TREATING EQUIPMENT OPERATORS 0.0%
0.0%
0.0%
0.0%
100.0%
117

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 0.0%
0.0%
0.0%
0.0%
100.0%
86

766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 0.0%
0.0%
0.0%
100.0%
0.0%
116

SUBTOTAL 0.0%
0.0%
0.0%
41.7%
58.2%
528

ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

213 ELECTRICAL AND ELECTRONIC TECHNICIANS 97.8%
0.0%
0.0%
0.0%
2.2%
641

SUBTOTAL 97.8%
0.0%
0.0%
0.0%
2.2%
641

TRANSPORTATION EQUIPMENT (SIC 37)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

216 ENGINEERING TECHNICIANS, N.E.C. 70.0%
0.0%
0.0%
30.0%
0.0%
34

724 HEAT TREATING EQUIPMENT OPERATORS 0.0%
0.0%
0.0%
0.0%
100.0%
50

SUBTOTAL 28.3%
0.0%
0.0%
12.1%
59.5%
84

ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

327 ORDER CLERKS 100.0%
0.0%
0.0%
0.0%
0.0%
1,579

366 METER READERS 100.0%
0.0%
0.0%
0.0%
0.0%
2,470

453 JANITORS AND CLEANERS 0.0%
0.0%
0.0%
100.0%
0.0%
1,315

557 SUPERVISORS; PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 100.0%
0.0%
0.0%
0.0%
0.0%
3,250

796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 100.0%
0.0%
0.0%
0.0%
0.0%
4,392

878 MACHINE FEEDERS AND OFFBEARERS 100.0%
0.0%
0.0%
0.0%
0.0%
1,384

SUBTOTAL 90.8%
0.0%
0.0%
9.1%
0.0%
14,390

WHOLESALE TRADE - NONDURABLE GOODS (SIC 51)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

754 PACKAGING AND FILLING MACHINE OPERATORS 0.0%
0.0%
0.0%
50.0%
50.0%
1,545

SUBTOTAL 0.0%
0.0%
0.0%
50.0%
50.0%
1,545

BUSINESS SERVICES (SIC 73)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

073 CHEMISTS, EXCEPT BIOCHEMISTS 100.0%
0.0%
0.0%
0.0%
0.0%
465

224 CHEMICAL TECHNICIANS 1.8%
0.0%
0.0%
49.1%
49.1%
1,990

225 SCIENCE TECHNICIANS, N.E.C. 30.7%
0.0%
69.3%
0.0%
0.0%
474

SUBTOTAL 22.0%
0.0%
11.2%
33.3%
33.3%
2,929

HEALTH SERVICES (SIC 80)

Code Occupation Description (1980) No
Control Resp
Prot Other
PPE
Vent Other
Control
Exposures

078 BIOLOGICAL AND LIFE SCIENTISTS 100.0%
0.0%
0.0%
0.0%
0.0%
30

083 MEDICAL SCIENTISTS 100.0%
0.0%
0.0%
0.0%
0.0%
28

224 CHEMICAL TECHNICIANS 0.0%
0.0%
66.7%
33.3%
0.0%
628

446 HEALTH AIDES, EXCEPT NURSING 0.0%
0.0%
0.0%
0.0%
100.0%
407

SUBTOTAL 5.3%
0.0%
38.3%
19.1%
37.2%
1,093

TOTAL 50.5%
0.0%
7.7%
37.3%
4.4%
86,877

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.

OIL AND GAS EXTRACTION (SIC 13)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
614	DRILLERS, OIL WELL	0.0%	0.0%	0.0%	100.0%	0.0%	4,694
848	HOIST AND WINCH OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	8,072
SUBTOTAL		63.2%	0.0%	0.0%	36.7%	0.0%	12,766
FOOD AND KINDRED PRODUCTS (SIC 20)
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%	101
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	0.0%	0.0%	0.0%	100.0%	0.0%	92
SUBTOTAL		52.3%	0.0%	0.0%	47.6%	0.0%	193
APPAREL AND OTHER TEXTILE PRODUCTS (SIC 23)
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%	19
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	19
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
048	CHEMICAL ENGINEERS	13.6%	0.0%	0.0%	0.0%	86.4%	71
073	CHEMISTS, EXCEPT BIOCHEMISTS	100.0%	0.0%	0.0%	0.0%	0.0%	154
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	0.0%	0.0%	0.0%	0.0%	100.0%	19
224	CHEMICAL TECHNICIANS	18.6%	0.0%	0.0%	61.1%	20.4%	2,245
235	TECHNICIANS, N.E.C.	0.0%	0.0%	50.0%	50.0%	0.0%	23
535	CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS	0.0%	0.0%	0.0%	0.0%	100.0%	45
575	ELECTRICIANS	0.0%	0.0%	0.0%	0.0%	100.0%	16
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	0.0%	0.0%	0.0%	0.0%	100.0%	32
633	SUPERVISORS, PRODUCTION OCCUPATIONS	12.9%	0.0%	0.0%	0.0%	87.1%	225
637	MACHINISTS	0.0%	0.0%	0.0%	0.0%	100.0%	16
694	WATER AND SEWAGE TREATMENT PLANT OPERATORS	0.0%	0.0%	0.0%	100.0%	0.0%	66
696	STATIONARY ENGINEERS	100.0%	0.0%	0.0%	0.0%	0.0%	123
756	MIXING AND BLENDING MACHINE OPERATORS	0.0%	0.0%	100.0%	0.0%	0.0%	129
779	MACHINE OPERATORS, NOT SPECIFIED	0.0%	0.0%	100.0%	0.0%	0.0%	5,878
783	WELDERS AND CUTTERS	0.0%	0.0%	0.0%	0.0%	100.0%	35
SUBTOTAL		8.0%	0.0%	66.3%	15.9%	9.6%	9,077
PETROLEUM AND COAL PRODUCTS (SIC 29)
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%	81
073	CHEMISTS, EXCEPT BIOCHEMISTS	100.0%	0.0%	0.0%	0.0%	0.0%	343
224	CHEMICAL TECHNICIANS	26.3%	0.0%	0.0%	73.7%	0.0%	2,103
225	SCIENCE TECHNICIANS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	322
453	JANITORS AND CLEANERS	13.3%	0.0%	0.0%	86.7%	0.0%	4,541
547	SPECIFIED MECHANICS AND REPAIRERS, N.E.C.	0.0%	0.0%	0.0%	100.0%	0.0%	2,386
549	NOT SPECIFIED MECHANICS AND REPAIRERS	100.0%	0.0%	0.0%	0.0%	0.0%	1,127
567	CARPENTERS	100.0%	0.0%	0.0%	0.0%	0.0%	403
575	ELECTRICIANS	100.0%	0.0%	0.0%	0.0%	0.0%	725
585	PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	100.0%	0.0%	0.0%	0.0%	0.0%	1,449
593	INSULATION WORKERS	100.0%	0.0%	0.0%	0.0%	0.0%	794
633	SUPERVISORS, PRODUCTION OCCUPATIONS	100.0%	0.0%	0.0%	0.0%	0.0%	322
637	MACHINISTS	100.0%	0.0%	0.0%	0.0%	0.0%	966
699	MISCELLANEOUS PLANT AND SYSTEM OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	1,325
756	MIXING AND BLENDING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	127
757	SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	3,528
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	403
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	100.0%	0.0%	0.0%	0.0%	0.0%	28
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	28.1%	0.0%	0.0%	71.9%	0.0%	20,585
783	WELDERS AND CUTTERS	100.0%	0.0%	0.0%	0.0%	0.0%	725
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	100.0%	0.0%	0.0%	0.0%	0.0%	322
878	MACHINE FEEDERS AND OFFBEARERS	100.0%	0.0%	0.0%	0.0%	0.0%	322
SUBTOTAL		47.1%	0.0%	0.0%	52.8%	0.0%	42,927
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
073	CHEMISTS, EXCEPT BIOCHEMISTS	100.0%	0.0%	0.0%	0.0%	0.0%	6
235	TECHNICIANS, N.E.C.	100.0%	0.0%	0.0%	0.0%	0.0%	12
SUBTOTAL		100.0%	0.0%	0.0%	0.0%	0.0%	18
PRIMARY METAL INDUSTRIES (SIC 33)
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%	247
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	0.0%	0.0%	0.0%	0.0%	100.0%	420
SUBTOTAL		37.0%	0.0%	0.0%	0.0%	62.9%	667
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
216	ENGINEERING TECHNICIANS, N.E.C.	0.0%	0.0%	0.0%	50.0%	50.0%	209
724	HEAT TREATING EQUIPMENT OPERATORS	0.0%	0.0%	0.0%	0.0%	100.0%	117
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	0.0%	0.0%	0.0%	0.0%	100.0%	86
766	FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD	0.0%	0.0%	0.0%	100.0%	0.0%	116
SUBTOTAL		0.0%	0.0%	0.0%	41.7%	58.2%	528
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
213	ELECTRICAL AND ELECTRONIC TECHNICIANS	97.8%	0.0%	0.0%	0.0%	2.2%	641
SUBTOTAL		97.8%	0.0%	0.0%	0.0%	2.2%	641
TRANSPORTATION EQUIPMENT (SIC 37)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
216	ENGINEERING TECHNICIANS, N.E.C.	70.0%	0.0%	0.0%	30.0%	0.0%	34
724	HEAT TREATING EQUIPMENT OPERATORS	0.0%	0.0%	0.0%	0.0%	100.0%	50
SUBTOTAL		28.3%	0.0%	0.0%	12.1%	59.5%	84
ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
327	ORDER CLERKS	100.0%	0.0%	0.0%	0.0%	0.0%	1,579
366	METER READERS	100.0%	0.0%	0.0%	0.0%	0.0%	2,470
453	JANITORS AND CLEANERS	0.0%	0.0%	0.0%	100.0%	0.0%	1,315
557	SUPERVISORS; PLUMBERS, PIPEFITTERS, AND STEAMFITTERS	100.0%	0.0%	0.0%	0.0%	0.0%	3,250
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	100.0%	0.0%	0.0%	0.0%	0.0%	4,392
878	MACHINE FEEDERS AND OFFBEARERS	100.0%	0.0%	0.0%	0.0%	0.0%	1,384
SUBTOTAL		90.8%	0.0%	0.0%	9.1%	0.0%	14,390
WHOLESALE TRADE - NONDURABLE GOODS (SIC 51)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
754	PACKAGING AND FILLING MACHINE OPERATORS	0.0%	0.0%	0.0%	50.0%	50.0%	1,545
SUBTOTAL		0.0%	0.0%	0.0%	50.0%	50.0%	1,545
BUSINESS SERVICES (SIC 73)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
073	CHEMISTS, EXCEPT BIOCHEMISTS	100.0%	0.0%	0.0%	0.0%	0.0%	465
224	CHEMICAL TECHNICIANS	1.8%	0.0%	0.0%	49.1%	49.1%	1,990
225	SCIENCE TECHNICIANS, N.E.C.	30.7%	0.0%	69.3%	0.0%	0.0%	474
SUBTOTAL		22.0%	0.0%	11.2%	33.3%	33.3%	2,929
HEALTH SERVICES (SIC 80)
Code	Occupation Description (1980)	No Control	Resp Prot	Other PPE	Vent	Other Control	Exposures
078	BIOLOGICAL AND LIFE SCIENTISTS	100.0%	0.0%	0.0%	0.0%	0.0%	30
083	MEDICAL SCIENTISTS	100.0%	0.0%	0.0%	0.0%	0.0%	28
224	CHEMICAL TECHNICIANS	0.0%	0.0%	66.7%	33.3%	0.0%	628
446	HEALTH AIDES, EXCEPT NURSING	0.0%	0.0%	0.0%	0.0%	100.0%	407
SUBTOTAL		5.3%	0.0%	38.3%	19.1%	37.2%	1,093
TOTAL		50.5%	0.0%	7.7%	37.3%	4.4%	86,877
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

National Occupational Exposure Survey(1981 - 1983)

Estimated Percentages of Controlled and Uncontrolled Potential Exposures to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

National Occupational Exposure Survey
(1981 - 1983)