Australia's coal trade with China has plummeted from more than $1 billion a month to just $30 million in the first months of the year, as shocking new figure reveal the depth of Beijing's economic wrath.
Mining giant BHP has raised the issue of China's restrictions directly with the government in its pre-budget submission.
Industry sources say there are no new coal sales going ahead with Chinese companies, with the $30 million a month in trade still trickling through since December - just 3 per cent of what it was - coming from the tail end of long-term contracts.
While most of the coal has been redirected to other markets, including Indonesia, Vietnam, Japan and Korea, the price is often as low as $80 a tonne less than the premium paid by China.
It is a big blow for Queensland, which sold about a third of its coal exports to the Asian superpower.
Last year the state's budget revealed royalties from coal had dropped about $2 billion to $1.6 billion, but it had been forecasting it would bounce back again this year.