I worked in Mt Gunson open cast copper mine (SA) in the early 1980's. No arable land anywhere near. Our biggest threat was again from roos. The big reds.
The haul road from pit to mill was 10km long and was used 90% by dump trucks. The water pipe supplying the mill with water from the bottom of the pit ran alongside the haul road (road had been built up about 10 foot from the surrounding countryside). The pipe leaked in numerous places, subsequently the vegetation was lush in many spots which became a magnet for the roos.
But 150 tonne dumptrucks simply turned roos into 30 foot long smears on the haul road. Every night we'd hit 3-4 of them. Service wagons were a different story...
Bookmarks