"Asbestos has not been confirmed at the site" said South Wales Fire & Rescue Service.
"However if asbestos is confirmed, this does not pose a safety risk to the public as heavy rainfall and water from firefighting will prevent the asbestos from spreading"
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The decision comes after a campaign led by Plaid Cymru and Rhondda Cynon Taf councillor Elyn Stephens to eradicate period poverty.
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