| Agent Name | VITAMIN B12 |
| CAS # | 68-19-9 |
| RTECS # | GG3750000 |
| Agent Code | 80358 |
| Code | Occupation Description (1980) | Total # Employees (Male & Female) |
Total # Female Employees |
| 019 | MANAGERS AND ADMINISTRATORS, N.E.C. | 424 | 417 |
| 036 | INSPECTORS AND COMPLIANCE OFFICERS, EXC. CONSTRUCTION | 32 | 32 |
| 073 | CHEMISTS, EXCEPT BIOCHEMISTS | 585 | 151 |
| 078 | BIOLOGICAL AND LIFE SCIENTISTS | 228 | 208 |
| 083 | MEDICAL SCIENTISTS | 179 | 137 |
| 084 | PHYSICIANS | 13 | |
| 086 | VETERINARIANS | 3,487 | 294 |
| 095 | REGISTERED NURSES | 11,699 | 11,159 |
| 096 | PHARMACISTS | 3,523 | 1,785 |
| 203 | CLINICAL LABORATORY TECHNOLOGISTS AND TECHNICIANS | 4,631 | 3,491 |
| 206 | RADIOLOGIC TECHNICIANS | 1,011 | 747 |
| 208 | HEALTH TECHNOLOGISTS AND TECHNICIANS, N.E.C. | 1,057 | 750 |
| 223 | BIOLOGICAL TECHNICIANS | 1,086 | 390 |
| 224 | CHEMICAL TECHNICIANS | 379 | 272 |
| 225 | SCIENCE TECHNICIANS, N.E.C. | 326 | 137 |
| 235 | TECHNICIANS, N.E.C. | 14 | 7 |
| 364 | TRAFFIC, SHIPPING, AND RECEIVING CLERKS | 1,612 | |
| 365 | STOCK AND INVENTORY CLERKS | 58 | |
| 368 | WEIGHERS, MEASURERS, AND CHECKERS | 76 | |
| 444 | MISCELLANEOUS FOOD PREPARATION OCCUPATIONS | 876 | 803 |
| 446 | HEALTH AIDES, EXCEPT NURSING | 2,618 | 1,584 |
| 453 | JANITORS AND CLEANERS | 4,195 | 403 |
| 454 | ELEVATOR OPERATORS | 363 | |
| 469 | PERSONAL SERVICE OCCUPATIONS, N.E.C. | 601 | 221 |
| 487 | ANIMAL CARETAKERS, EXCEPT FARM | 1,868 | 1,481 |
| 549 | NOT SPECIFIED MECHANICS AND REPAIRERS | 133 | |
| 633 | SUPERVISORS, PRODUCTION OCCUPATIONS | 241 | |
| 696 | STATIONARY ENGINEERS | 127 | |
| 754 | PACKAGING AND FILLING MACHINE OPERATORS | 2,730 | 1,051 |
| 755 | EXTRUDING AND FORMING MACHINE OPERATORS | 163 | |
| 756 | MIXING AND BLENDING MACHINE OPERATORS | 4,941 | 6 |
| 759 | PAINTING AND PAINT SPRAYING MACHINE OPERATORS | 195 | |
| 763 | ROASTING AND BAKING MACHINE OPERATORS, FOOD | 117 | |
| 768 | CRUSHING AND GRINDING MACHINE OPERATORS | 2,150 | |
| 777 | MISCELLANEOUS MACHINE OPERATORS, N.E.C. | 1,265 | 46 |
| 779 | MACHINE OPERATORS, NOT SPECIFIED | 2,816 | |
| 796 | PRODUCTION INSPECTORS, CHECKERS, AND EXAMINERS | 3,216 | 1,487 |
| 797 | PRODUCTION TESTERS | 19 | |
| 798 | PRODUCTION SAMPLERS AND WEIGHERS | 111 | |
| 804 | TRUCK DRIVERS, HEAVY | 227 | |
| 856 | INDUSTRIAL TRUCK AND TRACTOR EQUIPMENT OPERATORS | 280 | |
| 859 | MISCELLANEOUS MATERIAL MOVING EQUIPMENT OPERATORS | 703 | 46 |
| 877 | STOCK HANDLERS AND BAGGERS | 1,555 | |
| 878 | MACHINE FEEDERS AND OFFBEARERS | 58 | |
| 888 | HAND PACKERS AND PACKAGERS | 2,462 | 876 |
| 889 | LABORERS, EXCEPT CONSTRUCTION | 725 | |
| TOTAL | 65,178 | 27,980 | |
*(1) The estimates for each occupation apply across the surveyed industries in which the agent was observed. Not all industries were surveyed, and not all agents were observed in all surveyed industries. (2) When using the estimates, standard errors associated with estimates should be considered. (3) 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.