Australia’s main mineworkers union may soon win effective control of Queensland’s coal fields, the world’s largest single source of coking coal. If this happens,  BHP Billiton has threatened to shift a planned Aus$10 billion coal mining investment to Indonesia. Last November, the Australian mega-miner announced it would start work on the US$1.34 billion IndoMet project in Kalimantan “within weeks”, along with its domestic partner, PT Adaro Energy. Annual output of coking coal by IndoMet could reach five million metric tons by 2017.