Table 1

 Frequency of potential factors affecting exposure for each department

DeterminantDepartment
1234
*Closed I: machine is closed during metal working.
†Closed II: machine is closed during metal working, mould automatically moves outside metal working machine after finishing.
‡Closed III: machine is closed during metal working, mould automatically moves outside metal working machine after finishing, use of hoist.
Type of machines operated by worker
    Open4 (31%)2 (11%)0 (0%)0 (0%)
    Closed I*9 (69%)9 (50%)7 (100%)3 (23%)
    Closed II†0 (0%)7 (39%)0 (0%)0 (0%)
    Closed III‡0 (0%)0 (0%)0 (0%)10 (77%)
No. of work pieces handled by worker
    0–532 (15%)1 (5%)4 (57%)7 (54%)
    ⩾53–20010 (77%)5 (28%)3 (43%)6 (46%)
    ⩾2001 (8%)12 (67%)0 (0%)0 (0%)
Worker’s overall
    Short sleeved6 (46%)13 (72%)4 (57%)8 (62%)
    Long sleeved7 (54%)5 (28%)3 (43%)5 (38%)
Worker used compressed air to clean work pieces
    No2 (15%)0 (0%)0 (0%)5 (38%)
    Yes11 (85%)18 (100%)7 (100%)8 (62%)
Worker used gloves
    No2 (15%)0 (0%)1 (14%)4 (31%)
    Yes11 (85%)18 (100%)6 (86%)9 (69%)