US Patent Issued to ANGLO AMERICAN TECHNICAL & SUSTAINABILITY SERVICE, ANGLO CORPORATE SERVICES SOUTH AFRICA (PTY) on Sept. 23 for "Heap leaching" (British, South African, Australian Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,570, issued on Sept. 23, was assigned to ANGLO AMERICAN TECHNICAL & SUSTAINABILITY SERVICE LTD (London) and ANGLO CORPORATE SERVICES SOUTH AFRICA (PTY) LTD. (Rosebank, South Africa).

"Heap leaching" was invented by Anthony Owen Filmer (Kangaroo Point, Australia), Christopher Alan Biley (Johannesburg) and Daniel John Alexander (St Albans, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "THIS invention relates to a method of recovering metal values such as gold, copper, nickel, zinc and uranium from ores containing said metal values. The method includes the steps of crushing an ore (10) to provide a sand containing metal values with a P80...