This Tariff Concession Order declares that goods described as “gas cylinder blast cleaning machines” classified under tariff code 8424.30.90 are to be treated under item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 26 May 2009 (declared under s.269P; revocable under ss.269SC–269SD). It affects importers of those machines and the Australian Customs administration by changing the tariff treatment and requiring correct classification and administrative compliance; the order continues until revoked by the specified statutory mechanisms.