US Patent Issued to M2P ENGINEERING on Oct. 7 for "Method and apparatus for use in stope backfill mining" (Australian Inventor)

ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,435,630, issued on Oct. 7, was assigned to M2P ENGINEERING PTY LTD (Queensland, Australia).

"Method and apparatus for use in stope backfill mining" was invented by Adam Beswick (Queensland, Australia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for forming a passage in stope backfill material includes steps of: a) providing an expandable void forming apparatus at a lower level relative to an unexcavated stope; b) expanding the void forming apparatus, such that a substantially liquid-impermeable seal is formed between the void forming apparatus and the unexcavated stope; c) pouring backfill material into a void formed by the excavation of a sto...