My Lords, the estimate in 2001 was that about 2.5 million of the small hand-held extinguishers were around. That excludes the halon in buildings-based systems which is being decommissioned. The extinguishers can be dealt with now by incineration; shortly, a plasma arc process will be available. There are incineration plants which specialise in halon at Ellesmere Port and at Fawley, Hampshire. The plasma arc facility will be in the Teesside area.