•the most recent NPI data is for the period 1st July 2005 to 30th June 2006 [and that covers the first 9 months of Esperance Port Authority shipping lead ore] and the:
•Port Authority scored 1
for lead (designated "low").
•Mt Isa Mines on the other
hand scored 100 (the highest score possible)
for lead (and for Zn, Sb, As, Cu, Cd and SO2) emissions to air.