Results
In our country the occupational health norms7), for the intermittent hand-arm vibration (3–4 h daily) permit a maximal admissible level of 15–17.5 m/sec2. The values for acceleration vibration measurements reached equivalent values between 120 and 150 m/sec2, exceeding the permissible levels. Our determinations have showed exceeding this level by 8–9 fold. The P-90 type Tampela pneumatic hammers used by miners, are also responsible