Sub-Chapter2005200620072008200920102011
Nickel ores and concentrates.$1,745$1,055$960    
Zinc ores and concentrates.  $1,880    
Chromium ores and concentrates.  $7,485$14,569 $13,359 
Niobium, tantalum, vanadium and concentrates.    $800 $2,580
Precious metal ores and concentrates.      $561
Other ores and concentrates.$8,172    $5$90
Ash and residues      $410
Total$9,917$1,055$10,325$14,569$800$13,364$3,641