Patents Assigned to Highlands Frieda Pty. Limited
  • Atmospheric mineral leaching process
    Patent number: 5993635
    Abstract: A method is provided for processing a sulphide mineral composition which at least partly comprises an iron-containing mineral.
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: November 30, 1999
    Assignees: M.I.M. Holdings Limited, Highlands Frieda Pty. Limited
    Inventors: Michael Matthew Hourn, Duncan William Turner, Ian Raymond Holzberger