Commodity200520062007200820092011
Sodium sulphides  $6,880   
Zinc sulphide  $3$9,600$2,682 
Sulphides (excl. of sodium/zinc/cadmium); polysulphides, whether or not che ...$12,058$473   $101,752
Total$12,058$473$6,883$9,600$2,682$101,752