One operation which became infamous as it became known to the public was "Operation Mundingburra", a mine-clearing action conducted in the Long Hai Hills from 15 July 1969 involving 6 RAR/NZ (ANZAC.) The operation had three objectives: disrupt enemy infiltration into the villages, maintain regular checkpoints on the main access routes between the villages, visit local hamlets and offer medical services to those villagers who might need it. All platoons conducted mine clearing and ambushing tasks. After 31 days the operation ended with casualties all from mine detonations. These were Australian mines which had been uplifted by the Viet Cong from the Australian minefield laid in 1967 and relaid or booby trapped. 6 RAR/NZ's casualties were 11 killed (6 New Zealanders, 5 Australians) and 54 wounded (10 New Zealanders, 44 Australians). A particularly disastrous incident on 21 July was the major inspiration for the 1983 pop song I Was Only 19 by the Australian band Redgum.