National Occupational Exposure Survey
(1981 - 1983)

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

Agent Name MANGANESE OXIDE (MNO)
CAS # 1344-43-0
RTECS # OP0900000
Agent Code M1634

SIC Industry Description (1972) Total # Employees
(Male & Female)
Total # Female
Employees
07 AGRICULTURAL SERVICES 2,061 883
20 FOOD AND KINDRED PRODUCTS 6,637 339
26 PAPER AND ALLIED PRODUCTS 48  
28 CHEMICALS AND ALLIED PRODUCTS 3 3
30 RUBBER AND MISC. PLASTICS PRODUCTS 616 13
32 STONE, CLAY, AND GLASS PRODUCTS 6,272  
33 PRIMARY METAL INDUSTRIES 719  
34 FABRICATED METAL PRODUCTS 8,140 10
35 MACHINERY, EXCEPT ELECTRICAL 22,922 4,387
36 ELECTRIC AND ELECTRONIC EQUIPMENT 515 41
37 TRANSPORTATION EQUIPMENT 1,682 96
38 INSTRUMENTS AND RELATED PRODUCTS 330 55
39 MISCELLANEOUS MANUFACTURING INDUSTRIES 2,320 1,354
47 TRANSPORTATION SERVICES 258 86
51 WHOLESALE TRADE - NONDURABLE GOODS 6,161 474
55 AUTOMOTIVE DEALERS & SERVICE STATIONS 2,015  
75 AUTO REPAIR, SERVICES, AND GARAGES 240  
TOTAL 60,942 7,742

*(1) By survey design, not all 2-digit SICs were surveyed. (2) The estimates for each 2-digit SIC apply only to the 3- and 4-digit SICs surveyed within the 2-digit SIC. Not all SICs were surveyed. (3) When using the estimates, standard errors associated with estimates should be considered. (4) 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.

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