GLOBAL miners have delivered stinging attacks on the performance of federal Labor as commodity prices tumble and jobs are slashed in the nation's coal industry, which has gone from being one of the lowest-cost producers to the most expensive. Wollongong-born Anglo American chief Mark Cutifani previously said his outspokenness would not be diminished in his new role as head of the world's fifth biggest miner, and he proved true to his word in his first outing on Australian soil yesterday.