| Agent Name | SILICON |
| CAS # | 7440-21-3 |
| RTECS # | VW0400000 |
| Agent Code | 68695 |
| SIC | Industry Description (1972) | Total # Employees (Male & Female) |
Total # Female Employees |
| 07 | AGRICULTURAL SERVICES | 403 | |
| 13 | OIL AND GAS EXTRACTION | 3,707 | |
| 15 | GENERAL BUILDING CONTRACTORS | 36,034 | 86 |
| 16 | HEAVY CONSTRUCTION CONTRACTORS | 16,850 | 100 |
| 17 | SPECIAL TRADE CONTRACTORS | 80,480 | 141 |
| 20 | FOOD AND KINDRED PRODUCTS | 14,970 | 903 |
| 21 | TOBACCO MANUFACTURERS | 30 | |
| 22 | TEXTILE MILL PRODUCTS | 2,463 | 106 |
| 23 | APPAREL AND OTHER TEXTILE PRODUCTS | 1,837 | |
| 24 | LUMBER AND WOOD PRODUCTS | 4,606 | 601 |
| 25 | FURNITURE AND FIXTURES | 3,793 | 12 |
| 26 | PAPER AND ALLIED PRODUCTS | 10,087 | 110 |
| 27 | PRINTING AND PUBLISHING | 3,265 | 36 |
| 28 | CHEMICALS AND ALLIED PRODUCTS | 26,302 | 3,121 |
| 29 | PETROLEUM AND COAL PRODUCTS | 5,490 | 188 |
| 30 | RUBBER AND MISC. PLASTICS PRODUCTS | 14,981 | 590 |
| 31 | LEATHER AND LEATHER PRODUCTS | 113 | |
| 32 | STONE, CLAY, AND GLASS PRODUCTS | 16,087 | 1,592 |
| 33 | PRIMARY METAL INDUSTRIES | 50,845 | 888 |
| 34 | FABRICATED METAL PRODUCTS | 88,304 | 2,937 |
| 35 | MACHINERY, EXCEPT ELECTRICAL | 90,373 | 1,564 |
| 36 | ELECTRIC AND ELECTRONIC EQUIPMENT | 13,630 | 1,995 |
| 37 | TRANSPORTATION EQUIPMENT | 67,551 | 4,198 |
| 38 | INSTRUMENTS AND RELATED PRODUCTS | 11,684 | 1,576 |
| 39 | MISCELLANEOUS MANUFACTURING INDUSTRIES | 11,301 | 256 |
| 42 | TRUCKING AND WAREHOUSING | 7,186 | |
| 44 | WATER TRANSPORTATION | 1,012 | |
| 45 | TRANSPORTATION BY AIR | 6,960 | |
| 46 | PIPE LINES, EXCEPT NATURAL GAS | 1,197 | |
| 49 | ELECTRIC, GAS, AND SANITARY SERVICES | 14,650 | 116 |
| 50 | WHOLESALE TRADE - DURABLE GOODS | 16,623 | 293 |
| 55 | AUTOMOTIVE DEALERS & SERVICE STATIONS | 907 | |
| 72 | PERSONAL SERVICES | 140 | |
| 73 | BUSINESS SERVICES | 1,817 | 49 |
| 75 | AUTO REPAIR, SERVICES, AND GARAGES | 30,357 | |
| 76 | MISCELLANEOUS REPAIR SERVICES | 27,707 | |
| 80 | HEALTH SERVICES | 9,570 | 6,705 |
| TOTAL | 693,583 | 28,164 | |
*(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.