Posted By Mark Ruff I apologise if this subject has already been covered on another thread The information I have researched on the links between exposure levels & mesothelioma are vague. It's stated that repeated low exposures can result in the disease or relatively breif intense exposures. What constitutes "intense" & "relatively" brief? Also how many low exposures would put you at risk.

Posted By Robert K Lewis Mark As Peter indicates there are no defined answers. This is because it is not possible to define safe levels of fibre in the first place and thence any non-effect dose. We are also aware that susceptibility to cancer development is very tied to the individual's own defence mechanisms. This leads us to the definitions under CAR 2006 where only low intensity and sporadic exposure is permitted. This is reasonably well described. From this you could say that short and relatively intense is anything that low intensity and sporadic is not. A bit circular but probably the best that can be done. The above answer is, however, simplistic and there are many confounding factors. Bob