Residues in the form of:

  • Sludges
  • Filter Cakes
  • Ashes
  • Flue Dusts
  • Powders
  • Concentrates
  • Grindings
  • Slags

 

Containing one or more of the following elements:

 

NICKEL

COBALT

MOLYBDENUM

VANADIUM

TUNGSTEN