A 200 metre cordon had to be put around a fire on open ground because there was danger that an acetylene cylinder would explode. The incident was first reported on Wednesday (August 3) at Rhondda Cynon Taf in South-East Wales. Officers from South Wales Police said the area will stay closed until the fire service gives the all-clear. Fire officials revealed they left the blaze to cool overnight and were going back this morning to assess the situation.