Shares in producers fall after China's powerful central planning agency says country's "high steel demand period has passed" and inventories will stay high.
Spending committed by mining and energy companies to start or expand projects fell 14.6% to US$212bn at the end of April from $248bn a year earlier. That is a $36 billion drop.
Angry rioters attacked the nickel facility, which has been closed since early May after an estimated 100,000 litres of acid-tainted effluent polluted a nearby creek.
Cost of building Infrastructure to support 100mt of ore related to Rio Tinto's giant Simandou iron ore mine in Guinea alone estimated at over $13 billion.