National Occupational Exposure Survey, Numbers of Employees Potentially Exposed to Specific Agents by Occupation within 2-Digit SIC

National Occupational Exposure Survey
(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

Agent Name	DEHYDROABIETYLAMINE
CAS #	1446-61-3
RTECS #
Agent Code	82181

GENERAL BUILDING CONTRACTORS (SIC 15)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

567 CARPENTERS 1,112

SUBTOTAL 1,112

HEAVY CONSTRUCTION CONTRACTORS (SIC 16)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

313 SECRETARIES 106
106

453 JANITORS AND CLEANERS 65

804 TRUCK DRIVERS, HEAVY 453

SUBTOTAL 624
106

SPECIAL TRADE CONTRACTORS (SIC 17)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

563 BRICKMASONS AND STONEMASONS 495

SUBTOTAL 495

FOOD AND KINDRED PRODUCTS (SIC 20)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

444 MISCELLANEOUS FOOD PREPARATION OCCUPATIONS 714
714

453 JANITORS AND CLEANERS 769
18

686 BUTCHERS AND MEAT CUTTERS 2,067

687 BAKERS 1,866
510

SUBTOTAL 5,416
1,242

TEXTILE MILL PRODUCTS (SIC 22)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

738 WINDING AND TWISTING MACHINE OPERATORS 903
752

749 MISCELLANEOUS TEXTILE MACHINE OPERATORS 2,596
1,467

769 SLICING AND CUTTING MACHINE OPERATORS 903
790

SUBTOTAL 4,402
3,009

APPAREL AND OTHER TEXTILE PRODUCTS (SIC 23)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 429
45

SUBTOTAL 429
45

FURNITURE AND FIXTURES (SIC 25)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 62

SUBTOTAL 62

PAPER AND ALLIED PRODUCTS (SIC 26)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 32

SUBTOTAL 32

PRINTING AND PUBLISHING (SIC 27)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 558
287

SUBTOTAL 558
287

CHEMICALS AND ALLIED PRODUCTS (SIC 28)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 121
17

469 PERSONAL SERVICE OCCUPATIONS, N.E.C. 216
154

518 INDUSTRIAL MACHINERY REPAIRERS 65

756 MIXING AND BLENDING MACHINE OPERATORS 319

SUBTOTAL 721
171

RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 525
43

SUBTOTAL 525
43

STONE, CLAY, AND GLASS PRODUCTS (SIC 32)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 156
37

734 PRINTING MACHINE OPERATORS 141

SUBTOTAL 297
37

PRIMARY METAL INDUSTRIES (SIC 33)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

095 REGISTERED NURSES 57
57

374 MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C. 5

453 JANITORS AND CLEANERS 267
67

519 MACHINERY MAINTENANCE OCCUPATIONS 24

534 HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS 59

756 MIXING AND BLENDING MACHINE OPERATORS 5

796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 56
28

849 CRANE AND TOWER OPERATORS 27

SUBTOTAL 500
152

FABRICATED METAL PRODUCTS (SIC 34)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

073 CHEMISTS, EXCEPT BIOCHEMISTS 107

453 JANITORS AND CLEANERS 1,003

633 SUPERVISORS, PRODUCTION OCCUPATIONS 51

717 FABRICATING MACHINE OPERATORS, N.E.C. 107

723 METAL PLATING MACHINE OPERATORS 1,825
107

725 MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS 376
376

759 PAINTING AND PAINT SPRAYING MACHINE OPERATORS 71
35

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 42

SUBTOTAL 3,582
518

MACHINERY, EXCEPT ELECTRICAL (SIC 35)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

235 TECHNICIANS, N.E.C. 50

549 NOT SPECIFIED MECHANICS AND REPAIRERS 135

655 MISCELLANEOUS PRECISION METAL WORKERS 29
18

709 GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS 212
44

717 FABRICATING MACHINE OPERATORS, N.E.C. 94

725 MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS 137
12

777 MISCELLANEOUS MACHINE OPERATORS, N.E.C. 336
94

779 MACHINE OPERATORS, NOT SPECIFIED 15,233
4,352

SUBTOTAL 16,226
4,520

ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 206
125

723 METAL PLATING MACHINE OPERATORS 817
2

796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 12
7

SUBTOTAL 1,035
134

TRANSPORTATION EQUIPMENT (SIC 37)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 181
55

519 MACHINERY MAINTENANCE OCCUPATIONS 113

633 SUPERVISORS, PRODUCTION OCCUPATIONS 140

695 POWER PLANT OPERATORS 65

715 MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS 79

756 MIXING AND BLENDING MACHINE OPERATORS 52

796 PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS 52

859 MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS 113
17

SUBTOTAL 795
72

INSTRUMENTS AND RELATED PRODUCTS (SIC 38)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

235 TECHNICIANS, N.E.C. 1,196
852

364 TRAFFIC, SHIPPING, AND RECEIVING CLERKS 223
179

453 JANITORS AND CLEANERS 137

678 DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS 2,614
2,033

719 MOLDING AND CASTING MACHINE OPERATORS 246
112

723 METAL PLATING MACHINE OPERATORS 1,758
949

756 MIXING AND BLENDING MACHINE OPERATORS 45
45

SUBTOTAL 6,219
4,170

MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 165
165

518 INDUSTRIAL MACHINERY REPAIRERS 103

723 METAL PLATING MACHINE OPERATORS 666
181

SUBTOTAL 934
346

TRUCKING AND WAREHOUSING (SIC 42)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 837
101

SUBTOTAL 837
101

TRANSPORTATION BY AIR (SIC 45)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 1,182
118

505 AUTOMOBILE MECHANICS 528

SUBTOTAL 1,710
118

COMMUNICATION (SIC 48)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 181

SUBTOTAL 181

ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 327
164

SUBTOTAL 327
164

WHOLESALE TRADE - DURABLE GOODS (SIC 50)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 214
104

889 LABORERS, EXCEPT CONSTRUCTION 920

SUBTOTAL 1,134
104

WHOLESALE TRADE - NONDURABLE GOODS (SIC 51)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 431

SUBTOTAL 431

AUTOMOTIVE DEALERS & SERVICE STATIONS (SIC 55)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

444 MISCELLANEOUS FOOD PREPARATION OCCUPATIONS 531
250

748 LAUNDERING AND DRY CLEANING MACHINE OPERATORS 39

SUBTOTAL 570
250

PERSONAL SERVICES (SIC 72)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

453 JANITORS AND CLEANERS 255

SUBTOTAL 255

BUSINESS SERVICES (SIC 73)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

056 INDUSTRIAL ENGINEERS 155
78

073 CHEMISTS, EXCEPT BIOCHEMISTS 2,017
576

453 JANITORS AND CLEANERS 23,346
6,196

SUBTOTAL 25,518
6,850

HEALTH SERVICES (SIC 80)

Code Occupation Description (1980) Total # Employees
(Male & Female) Total # Female
Employees

095 REGISTERED NURSES 7,259
860

097 DIETITIANS 1,799
1,223

098 INHALATION THERAPISTS 126
14

103 PHYSICAL THERAPISTS 383
318

203 CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS 552
360

206 RADIOLOGIC TECHNICIANS 1,194
573

208 HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. 1,366
1,138

365 STOCK AND INVENTORY CLERKS 875
608

444 MISCELLANEOUS FOOD PREPARATION OCCUPATIONS 3,535
2,450

446 HEALTH AIDES, EXCEPT NURSING 6,772
4,101

449 MAIDS AND HOUSEMEN 7,970
4,837

453 JANITORS AND CLEANERS 518
282

678 DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS 948
316

887 VEHICLE WASHERS AND EQUIPMENT CLEANERS 23

SUBTOTAL 33,320
17,080

TOTAL 108,247 39,519

RELATED PAGES: Estimates by SIC, Estimates by Occupation

*(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 estimates, 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.

GENERAL BUILDING CONTRACTORS (SIC 15)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
567	CARPENTERS	1,112
SUBTOTAL		1,112
HEAVY CONSTRUCTION CONTRACTORS (SIC 16)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
313	SECRETARIES	106	106
453	JANITORS AND CLEANERS	65
804	TRUCK DRIVERS, HEAVY	453
SUBTOTAL		624	106
SPECIAL TRADE CONTRACTORS (SIC 17)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
563	BRICKMASONS AND STONEMASONS	495
SUBTOTAL		495
FOOD AND KINDRED PRODUCTS (SIC 20)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
444	MISCELLANEOUS FOOD PREPARATION OCCUPATIONS	714	714
453	JANITORS AND CLEANERS	769	18
686	BUTCHERS AND MEAT CUTTERS	2,067
687	BAKERS	1,866	510
SUBTOTAL		5,416	1,242
TEXTILE MILL PRODUCTS (SIC 22)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
738	WINDING AND TWISTING MACHINE OPERATORS	903	752
749	MISCELLANEOUS TEXTILE MACHINE OPERATORS	2,596	1,467
769	SLICING AND CUTTING MACHINE OPERATORS	903	790
SUBTOTAL		4,402	3,009
APPAREL AND OTHER TEXTILE PRODUCTS (SIC 23)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	429	45
SUBTOTAL		429	45
FURNITURE AND FIXTURES (SIC 25)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	62
SUBTOTAL		62
PAPER AND ALLIED PRODUCTS (SIC 26)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	32
SUBTOTAL		32
PRINTING AND PUBLISHING (SIC 27)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	558	287
SUBTOTAL		558	287
CHEMICALS AND ALLIED PRODUCTS (SIC 28)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	121	17
469	PERSONAL SERVICE OCCUPATIONS, N.E.C.	216	154
518	INDUSTRIAL MACHINERY REPAIRERS	65
756	MIXING AND BLENDING MACHINE OPERATORS	319
SUBTOTAL		721	171
RUBBER AND MISC. PLASTICS PRODUCTS (SIC 30)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	525	43
SUBTOTAL		525	43
STONE, CLAY, AND GLASS PRODUCTS (SIC 32)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	156	37
734	PRINTING MACHINE OPERATORS	141
SUBTOTAL		297	37
PRIMARY METAL INDUSTRIES (SIC 33)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
095	REGISTERED NURSES	57	57
374	MATERIAL RECORDING, SCHEDULING, AND DISTRIBUTING CLERKS, N.E.C.	5
453	JANITORS AND CLEANERS	267	67
519	MACHINERY MAINTENANCE OCCUPATIONS	24
534	HEATING, AIR CONDITIONING, AND REFRIGERATION MECHANICS	59
756	MIXING AND BLENDING MACHINE OPERATORS	5
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	56	28
849	CRANE AND TOWER OPERATORS	27
SUBTOTAL		500	152
FABRICATED METAL PRODUCTS (SIC 34)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
073	CHEMISTS, EXCEPT BIOCHEMISTS	107
453	JANITORS AND CLEANERS	1,003
633	SUPERVISORS, PRODUCTION OCCUPATIONS	51
717	FABRICATING MACHINE OPERATORS, N.E.C.	107
723	METAL PLATING MACHINE OPERATORS	1,825	107
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	376	376
759	PAINTING AND PAINT SPRAYING MACHINE OPERATORS	71	35
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	42
SUBTOTAL		3,582	518
MACHINERY, EXCEPT ELECTRICAL (SIC 35)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
235	TECHNICIANS, N.E.C.	50
549	NOT SPECIFIED MECHANICS AND REPAIRERS	135
655	MISCELLANEOUS PRECISION METAL WORKERS	29	18
709	GRINDING, ABRADING, BUFFING, AND POLISHING MACHINE OPERATORS	212	44
717	FABRICATING MACHINE OPERATORS, N.E.C.	94
725	MISCELLANEOUS METAL AND PLASTIC PROCESSING MACHINE OPERATORS	137	12
777	MISCELLANEOUS MACHINE OPERATORS, N.E.C.	336	94
779	MACHINE OPERATORS, NOT SPECIFIED	15,233	4,352
SUBTOTAL		16,226	4,520
ELECTRIC AND ELECTRONIC EQUIPMENT (SIC 36)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	206	125
723	METAL PLATING MACHINE OPERATORS	817	2
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	12	7
SUBTOTAL		1,035	134
TRANSPORTATION EQUIPMENT (SIC 37)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	181	55
519	MACHINERY MAINTENANCE OCCUPATIONS	113
633	SUPERVISORS, PRODUCTION OCCUPATIONS	140
695	POWER PLANT OPERATORS	65
715	MISCELLANEOUS METAL, PLASTIC, STONE, AND GLASS WORKING MACHINE OPERATORS	79
756	MIXING AND BLENDING MACHINE OPERATORS	52
796	PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS	52
859	MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS	113	17
SUBTOTAL		795	72
INSTRUMENTS AND RELATED PRODUCTS (SIC 38)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
235	TECHNICIANS, N.E.C.	1,196	852
364	TRAFFIC, SHIPPING, AND RECEIVING CLERKS	223	179
453	JANITORS AND CLEANERS	137
678	DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS	2,614	2,033
719	MOLDING AND CASTING MACHINE OPERATORS	246	112
723	METAL PLATING MACHINE OPERATORS	1,758	949
756	MIXING AND BLENDING MACHINE OPERATORS	45	45
SUBTOTAL		6,219	4,170
MISCELLANEOUS MANUFACTURING INDUSTRIES (SIC 39)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	165	165
518	INDUSTRIAL MACHINERY REPAIRERS	103
723	METAL PLATING MACHINE OPERATORS	666	181
SUBTOTAL		934	346
TRUCKING AND WAREHOUSING (SIC 42)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	837	101
SUBTOTAL		837	101
TRANSPORTATION BY AIR (SIC 45)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	1,182	118
505	AUTOMOBILE MECHANICS	528
SUBTOTAL		1,710	118
COMMUNICATION (SIC 48)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	181
SUBTOTAL		181
ELECTRIC, GAS, AND SANITARY SERVICES (SIC 49)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	327	164
SUBTOTAL		327	164
WHOLESALE TRADE - DURABLE GOODS (SIC 50)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	214	104
889	LABORERS, EXCEPT CONSTRUCTION	920
SUBTOTAL		1,134	104
WHOLESALE TRADE - NONDURABLE GOODS (SIC 51)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	431
SUBTOTAL		431
AUTOMOTIVE DEALERS & SERVICE STATIONS (SIC 55)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
444	MISCELLANEOUS FOOD PREPARATION OCCUPATIONS	531	250
748	LAUNDERING AND DRY CLEANING MACHINE OPERATORS	39
SUBTOTAL		570	250
PERSONAL SERVICES (SIC 72)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
453	JANITORS AND CLEANERS	255
SUBTOTAL		255
BUSINESS SERVICES (SIC 73)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
056	INDUSTRIAL ENGINEERS	155	78
073	CHEMISTS, EXCEPT BIOCHEMISTS	2,017	576
453	JANITORS AND CLEANERS	23,346	6,196
SUBTOTAL		25,518	6,850
HEALTH SERVICES (SIC 80)
Code	Occupation Description (1980)	Total # Employees (Male & Female)	Total # Female Employees
095	REGISTERED NURSES	7,259	860
097	DIETITIANS	1,799	1,223
098	INHALATION THERAPISTS	126	14
103	PHYSICAL THERAPISTS	383	318
203	CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS	552	360
206	RADIOLOGIC TECHNICIANS	1,194	573
208	HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C.	1,366	1,138
365	STOCK AND INVENTORY CLERKS	875	608
444	MISCELLANEOUS FOOD PREPARATION OCCUPATIONS	3,535	2,450
446	HEALTH AIDES, EXCEPT NURSING	6,772	4,101
449	MAIDS AND HOUSEMEN	7,970	4,837
453	JANITORS AND CLEANERS	518	282
678	DENTAL LABORATORY AND MEDICAL APPLIANCE TECHNICIANS	948	316
887	VEHICLE WASHERS AND EQUIPMENT CLEANERS	23
SUBTOTAL		33,320	17,080
TOTAL		108,247	39,519
RELATED PAGES: Estimates by SIC, Estimates by Occupation

National Occupational Exposure Survey(1981 - 1983)

Estimated Numbers of Employees Potentially Exposed to Specific Agents by Occupation within 2-Digit Standard Industrial Classification (SIC)*

National Occupational Exposure Survey
(1981 - 1983)