Iron Ore Silica Differential per 1% within 5560% Fe Fines TSIAI00 TSIAI03 1% silica for fines with 5560% Fe NA* NA NA NA NA /dmt Iron ore Silica Differential per 1% with <% /DMT IOALF00 IOALF03 1% silica below % for fines with % Fe NA* NA NA NA NA /dmt Iron ore Silica differential per 1% with % /DMT IOPPS10