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 (MNO2)
CAS # 1313-13-9
RTECS # OP0350000
Agent Code 44030

SIC Industry Description (1972) Total # Employees
(Male & Female)
Total # Female
Employees
15 GENERAL BUILDING CONTRACTORS 6,048  
17 SPECIAL TRADE CONTRACTORS 4,514  
24 LUMBER AND WOOD PRODUCTS 5,121 3,073
26 PAPER AND ALLIED PRODUCTS 3,239 279
27 PRINTING AND PUBLISHING 967 18
28 CHEMICALS AND ALLIED PRODUCTS 447 179
32 STONE, CLAY, AND GLASS PRODUCTS 4,807  
33 PRIMARY METAL INDUSTRIES 3,486 21
34 FABRICATED METAL PRODUCTS 245  
35 MACHINERY, EXCEPT ELECTRICAL 136 12
36 ELECTRIC AND ELECTRONIC EQUIPMENT 6,692 3,794
37 TRANSPORTATION EQUIPMENT 16,258 3,247
38 INSTRUMENTS AND RELATED PRODUCTS 7,547 4,209
39 MISCELLANEOUS MANUFACTURING INDUSTRIES 221  
45 TRANSPORTATION BY AIR 4,021  
51 WHOLESALE TRADE - NONDURABLE GOODS 6,161 474
73 BUSINESS SERVICES 1,795  
80 HEALTH SERVICES 259 219
TOTAL 71,963 15,526

*(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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