| Agent Name | W, TUNGSTEN-MF UNKNOWN |
| CAS # | 7440-33-7 |
| RTECS # | YO7175000 |
| Agent Code | 74980 |
| SIC | Industry Description (1972) | Total # Employees (Male & Female) |
Total # Female Employees |
| 17 | SPECIAL TRADE CONTRACTORS | 4,450 | |
| 20 | FOOD AND KINDRED PRODUCTS | 18 | |
| 30 | RUBBER AND MISC. PLASTICS PRODUCTS | 11 | |
| 32 | STONE, CLAY, AND GLASS PRODUCTS | 571 | |
| 33 | PRIMARY METAL INDUSTRIES | 9,905 | 123 |
| 34 | FABRICATED METAL PRODUCTS | 4,714 | 38 |
| 35 | MACHINERY, EXCEPT ELECTRICAL | 4,875 | 30 |
| 36 | ELECTRIC AND ELECTRONIC EQUIPMENT | 4,588 | 2,390 |
| 37 | TRANSPORTATION EQUIPMENT | 4,938 | 68 |
| 38 | INSTRUMENTS AND RELATED PRODUCTS | 2,097 | 841 |
| 39 | MISCELLANEOUS MANUFACTURING INDUSTRIES | 760 | 64 |
| 45 | TRANSPORTATION BY AIR | 1,247 | |
| 73 | BUSINESS SERVICES | 109 | 36 |
| 80 | HEALTH SERVICES | 40 | |
| TOTAL | 38,323 | 3,591 | |
*(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.