Table 1

The list of exposure categories, job numbers, and their respective job titles

Exposure category Job number Job title
S21Administrative staff (office bound)
22Administrative staff (non-office bound)
T23Laboratory assistant
24Process control room operator
U25Instrument mechanic
26Electrician
V27Process foreman
28Furnace operator
W29Fitter
30Welder
X31Process operator
32Conveyor operator
Y33aGeneral warehouseman (for those factories using job rotation)
33bBag packers (25 kg and “big bags”)
33cBulk loaders
33dForklift truck drivers
Z34Cleaner (non-office), site crew