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Blasting has ceased for Koolan Island, no longer requiring the Danger Area D188, adjacent to Koolan Central Aerodrome (YKLC).
Mining on Koolan Island has ceased and blasting campaign to end by November 2026. Removal of the Danger Area D188 has been requested to take place in the next AIRAC cycle of the DAH. Disestablishment will be effective 10 June 2027.