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 CARBON MONOXIDE
CAS # 630-08-0
RTECS # FG3500000 
Agent Code 17460

HEAVY CONSTRUCTION CONTRACTORS (SIC 16)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
019 MANAGERS AND ADMINISTRATORS, N.E.C. 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 48
516 HEAVY EQUIPMENT MECHANICS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 191
567 CARPENTERS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 620
575 ELECTRICIANS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 95
779 MACHINE OPERATORS, NOT SPECIFIED 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 143
804 TRUCK DRIVERS, HEAVY 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 572
844 OPERATING ENGINEERS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 1,811
853 EXCAVATING AND LOADING MACHINE OPERATORS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 95
855 GRADER, DOZER, AND SCRAPER OPERATORS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 143
869 CONSTRUCTION LABORERS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 7,150
SUBTOTAL 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 10,868
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
048 CHEMICAL ENGINEERS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 26
073 CHEMISTS, EXCEPT BIOCHEMISTS 94.9%
 0.0%
 0.0%
 0.0%
 5.1%
 189
224 CHEMICAL TECHNICIANS 13.0%
 0.0%
 0.0%
 78.8%
 8.3%
 700
535 CAMERA, WATCH, AND MUSICAL INSTRUMENT REPAIRERS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 26
549 NOT SPECIFIED MECHANICS AND REPAIRERS 0.0%
 50.0%
 0.0%
 50.0%
 0.0%
 2,836
575 ELECTRICIANS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 13
585 PLUMBERS, PIPEFITTERS, AND STEAMFITTERS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 45
633 SUPERVISORS, PRODUCTION OCCUPATIONS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 58
637 MACHINISTS 0.0%
 0.0%
 0.0%
 68.6%
 31.4%
 51
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 0.0%
 50.0%
 0.0%
 50.0%
 0.0%
 7,877
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%
 23
856 INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 185
859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 26
889 LABORERS, EXCEPT CONSTRUCTION 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 114
SUBTOTAL 2.5%
 29.6%
 32.5%
 33.7%
 1.5%
 18,047
PETROLEUM AND COAL PRODUCTS (SIC 29)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
224 CHEMICAL TECHNICIANS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 1,034
453 JANITORS AND CLEANERS 9.1%
 0.0%
 0.0%
 90.9%
 0.0%
 2,888
547 SPECIFIED MECHANICS AND REPAIRERS, N.E.C. 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 1,590
633 SUPERVISORS, PRODUCTION OCCUPATIONS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 703
757 SEPARATING, FILTERING, AND CLARIFYING MACHINE OPERATORS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 14
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. 4.3%
 0.0%
 0.0%
 95.7%
 0.0%
 11,106
SUBTOTAL 4.5%
 0.0%
 0.0%
 91.4%
 4.0%
 17,363
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 0.0%
 0.0%
 0.0%
 50.0%
 50.0%
 3,377
849 CRANE AND TOWER OPERATORS 0.0%
 0.0%
 0.0%
 50.0%
 50.0%
 1,013
859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 0.0%
 0.0%
 0.0%
 50.0%
 50.0%
 1,689
SUBTOTAL 0.0%
 0.0%
 0.0%
 50.0%
 50.0%
 6,079
PRIMARY METAL INDUSTRIES (SIC 33)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
216 ENGINEERING TECHNICIANS, N.E.C. 0.0%
 0.0%
 100.0%
 0.0%
 0.0%
 70
225 SCIENCE TECHNICIANS, N.E.C. 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 594
453 JANITORS AND CLEANERS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 2,359
518 INDUSTRIAL MACHINERY REPAIRERS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 93
563 BRICKMASONS AND STONEMASONS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 1,224
633 SUPERVISORS, PRODUCTION OCCUPATIONS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 786
637 MACHINISTS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 117
719 MOLDING AND CASTING MACHINE OPERATORS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 2,188
724 HEAT TREATING EQUIPMENT OPERATORS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 451
766 FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD 73.3%
 0.0%
 0.0%
 18.2%
 8.6%
 2,184
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 25
779 MACHINE OPERATORS, NOT SPECIFIED 0.0%
 0.0%
 0.0%
 50.0%
 50.0%
 2,423
783 WELDERS AND CUTTERS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 420
849 CRANE AND TOWER OPERATORS 33.8%
 0.0%
 0.0%
 0.0%
 66.2%
 1,033
889 LABORERS, EXCEPT CONSTRUCTION 80.2%
 0.0%
 19.8%
 0.0%
 0.0%
 2,123
SUBTOTAL 70.1%
 0.0%
 3.0%
 13.9%
 12.9%
 16,090
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%
 100.0%
 0.0%
 56
235 TECHNICIANS, N.E.C. 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 25
453 JANITORS AND CLEANERS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 62
717 FABRICATING MACHINE OPERATORS, N.E.C. 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 331
724 HEAT TREATING EQUIPMENT OPERATORS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 44
774 PHOTOGRAPHIC PROCESS MACHINE OPERATORS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 90
SUBTOTAL 10.1%
 0.0%
 0.0%
 70.8%
 18.9%
 608
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
723 METAL PLATING MACHINE OPERATORS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 46
SUBTOTAL 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 46
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 105
SUBTOTAL 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 105
TRUCKING AND WAREHOUSING (SIC 42)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
019 MANAGERS AND ADMINISTRATORS, N.E.C. 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 624
364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 693
804 TRUCK DRIVERS, HEAVY 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 2,720
883 FREIGHT, STOCK, AND MATERIAL MOVERS, HAND, N.E.C. 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 1,299
887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 225
SUBTOTAL 23.3%
 0.0%
 0.0%
 76.6%
 0.0%
 5,561
WHOLESALE TRADE - DURABLE GOODS (SIC 50)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
505 AUTOMOBILE MECHANICS 0.0%
 0.0%
 0.0%
 66.7%
 33.3%
 6,007
SUBTOTAL 0.0%
 0.0%
 0.0%
 66.7%
 33.3%
 6,007
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 0.0%
 0.0%
 2.3%
 84.6%
 13.1%
 900
213 ELECTRICAL AND ELECTRONIC TECHNICIANS 0.0%
 0.0%
 0.0%
 50.0%
 50.0%
 1,480
216 ENGINEERING TECHNICIANS, N.E.C. 0.0%
 0.0%
 0.0%
 46.9%
 53.1%
 715
224 CHEMICAL TECHNICIANS 0.0%
 0.0%
 0.0%
 100.0%
 0.0%
 73
235 TECHNICIANS, N.E.C. 0.0%
 0.0%
 0.0%
 50.0%
 50.0%
 1,954
SUBTOTAL 0.0%
 0.0%
 0.4%
 56.3%
 43.2%
 5,122
HEALTH SERVICES (SIC 80)
Code Occupation Description (1980) No
Control		 Resp
Prot		 Other
PPE
Vent		 Other
Control
Exposures
015 MANAGERS, MEDICINE AND HEALTH 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 9
084 PHYSICIANS 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 14
095 REGISTERED NURSES 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 215
098 INHALATION THERAPISTS 80.8%
 0.0%
 0.0%
 10.4%
 8.9%
 7,396
105 THERAPISTS, N.E.C. 0.0%
 0.0%
 0.0%
 0.0%
 100.0%
 231
203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 93.8%
 0.0%
 0.0%
 0.0%
 6.2%
 1,453
208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 648
446 HEALTH AIDES, EXCEPT NURSING 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 90
633 SUPERVISORS, PRODUCTION OCCUPATIONS 100.0%
 0.0%
 0.0%
 0.0%
 0.0%
 9
SUBTOTAL 82.5%
 0.0%
 0.0%
 7.6%
 9.8%
 10,065
TOTAL 33.9%
 5.4%
 6.5%
 41.5%
 12.5%
 97,506
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.

NIOSH Home | NIOSH Search | Site Index | Contact Us | NOES Home