TCO 0832371 declares that semi‑autogenous grinding (SAG) mill trommels (tariff classification 8474.90.00) attract the Schedule 4 tariff concession from 23 September 2008, reducing or removing import duty while the order remains in force (made under s.269P). Importers benefit from lower duties; domestic suppliers face altered competitive incentives. The concession continues until revoked under ss.269SC–269SD and was made by a Chief Executive Officer delegate (Paul Mercer), reflecting an exercise of administrative discretion.