Lacklustre performances by small mining companies on the London Stock Exchange are driving rivals in need of cash to find alternative ways to raise capital.
The current debate surrounding coal is generally one of how long it will continue to play a role in the world's energy mix before it is replaced by cleaner alternatives, but the coming years may see a deficit in seaborne markets for the polluting fuel.
Among other geopolitical developments, the drop is attributable to investors getting calmer over the news that China's economic policy will see few changes in the near future.