Saw this last night ORCA and Rage

Operators were Oriental Air Bridge and Xstrata Nickel both were under Belgium flag what the hell is a mining company doing flying under a military designator? Oriental Airbridge is formerly Nagasaki Airlines not that should be of concern unless its DS symbolism

Found a nice little PDF on Xstrata https://www.sec.gov/Archives/edgar/vprr/1001/10015670.pdf