Age: INVESTMENT and production in the coal industry are galloping towards record highs, in stark contrast to moves in Australia’s biggest export market to shift towards cleaner fuels. As Japan – which buys nearly half of Australia’s coal exports – pledges heavy cuts to its greenhouse gas emissions, a coal investment boom is driving domestic production to new peaks. Over the next five years Australia’s total coal production is set to bulge by 30 per cent to a record 450 million …