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suggestions
David,
Suggest you
1. get your WHS unit to measure the noise level to see if it presents a hearing damage hazard. It's not just the overall level but the frequency distribution. Some frequencies are more damaging than others. If it is damaging, then the problem should be dealt with for everyone in the lab.
2. You can put screens lined with sound absorbing tiles around pumps the dull the sound.
3. Look at the ceilings and walls. You might be able to look at lining with sound proof tiles. I don't remember if I showed you our MAT253 lab when you collected the Prism? We installed a suspended false ceiling with compressed fiber tiles. Has killed a lot of reverberation which has cut down the noise level in that lab compared o the old days when it had a concrete ceiling.
Joe
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