Asbestos: Call for routine tests after Cwmcarn closure
Growing concern about asbestos levels in schools has led to calls for routine testing for airborne fibres in classrooms in Wales.
An investigation by the BBC Wales programme Week In Week Out has found there is no acceptable safe limit for exposure to asbestos dust in schools.
But the Health and Safety Executive (HSE) says if asbestos is in a good condition and undisturbed it should not be a risk.
Tim Rogers reports.