| Agent Name | RESIDUES (PETROLEUM), CATALYTIC REFORMER FRACTIONATOR |
| CAS # | 64741-67-9 |
| RTECS # | |
| Agent Code | Y1023 |
| Code | Occupation Description (1980) | Total # Employees (Male & Female) |
Total # Female Employees |
| 073 | CHEMISTS, EXCEPT BIOCHEMISTS | 75 | 37 |
| 216 | ENGINEERING TECHNICIANS, N.E.C. | 178 | |
| 453 | JANITORS AND CLEANERS | 950 | |
| 518 | INDUSTRIAL MACHINERY REPAIRERS | 159 | |
| 519 | MACHINERY MAINTENANCE OCCUPATIONS | 43 | |
| 544 | MILLWRIGHTS | 371 | |
| 549 | NOT SPECIFIED MECHANICS AND REPAIRERS | 457 | |
| 575 | ELECTRICIANS | 174 | |
| 585 | PLUMBERS, PIPEFITTERS, AND STEAMFITTERS | 145 | |
| 633 | SUPERVISORS, PRODUCTION OCCUPATIONS | 3 | |
| 696 | STATIONARY ENGINEERS | 255 | |
| 719 | MOLDING AND CASTING MACHINE OPERATORS | 1,282 | 127 |
| 756 | MIXING AND BLENDING MACHINE OPERATORS | 178 | |
| 766 | FURNACE, KILN, AND OVEN OPERATORS, EXC. FOOD | 679 | |
| 777 | MISCELLANEOUS MACHINE OPERATORS, N.E.C. | 8,267 | 1,174 |
| 779 | MACHINE OPERATORS, NOT SPECIFIED | 6,409 | |
| 804 | TRUCK DRIVERS, HEAVY | 19 | |
| 869 | CONSTRUCTION LABORERS | 3,078 | |
| 887 | VEHICLE WASHERS AND EQUIPMENT CLEANERS | 20 | |
| 889 | LABORERS, EXCEPT CONSTRUCTION | 115 | 2 |
| TOTAL | 22,855 | 1,340 | |
*(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.