| Agent Name | ZR, ZIRCONIUM MF-UNKNOWN |
| CAS # | 7440-67-7 |
| RTECS # | ZH7070000 |
| Agent Code | 77265 |
| SIC | Industry Description (1972) | Total # Employees (Male & Female) |
Total # Female Employees |
| 15 | GENERAL BUILDING CONTRACTORS | 9,664 | |
| 17 | SPECIAL TRADE CONTRACTORS | 5,757 | |
| 20 | FOOD AND KINDRED PRODUCTS | 537 | |
| 22 | TEXTILE MILL PRODUCTS | 19 | |
| 25 | FURNITURE AND FIXTURES | 295 | 12 |
| 28 | CHEMICALS AND ALLIED PRODUCTS | 1,153 | 13 |
| 29 | PETROLEUM AND COAL PRODUCTS | 1,679 | |
| 32 | STONE, CLAY, AND GLASS PRODUCTS | 2,224 | 712 |
| 33 | PRIMARY METAL INDUSTRIES | 5,835 | |
| 34 | FABRICATED METAL PRODUCTS | 15,043 | 779 |
| 35 | MACHINERY, EXCEPT ELECTRICAL | 10,547 | 91 |
| 36 | ELECTRIC AND ELECTRONIC EQUIPMENT | 1,386 | 274 |
| 37 | TRANSPORTATION EQUIPMENT | 8,049 | 76 |
| 39 | MISCELLANEOUS MANUFACTURING INDUSTRIES | 225 | |
| 45 | TRANSPORTATION BY AIR | 1,005 | |
| 76 | MISCELLANEOUS REPAIR SERVICES | 723 | |
| TOTAL | 64,142 | 1,956 | |
*(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.