What this does: This is a customs duty exemption (called a Tariff Concession Order) for specific spare parts used in mining equipment.
The goods: Agitator blades and agitator shafts used in "leaching plants" (industrial tanks where chemicals extract minerals from ore). These parts are classified under customs code 8479.90.00.
Who it affects: Mining companies and equipment suppliers who import these specific replacement parts. They can bring these goods into Australia without paying import duties (under Item 50 of Schedule 4 to the Customs Tariff Act 1995).
Why it matters: It reduces costs for maintaining mineral processing equipment by removing the tariff (import tax) that would normally apply to these parts. The concession took effect on 17 July 2008 and remains active until cancelled.