Greenbushes CGP3


Greenbushes Mine
approx 80km SW of Bunbury WA

Project Owner

Talison Lithium




18 months

Start Date


Greenbushes is the world’s largest lithium mining operation. The site comprises a large open-pit mine, four processing plants – three producing chemical grade lithium concentrates (CGP1, CGP2, and TRP), one producing technical grade lithium concentrates, and associated support infrastructure.

The construction of Chemical Grade Plant 3 (CGP3) was approved in March 2022 following the conclusion of a front-end-engineering and design process and updated capital cost estimate. Once complete, CGP3 is expected to contribute an additional 520ktpa of spodumene concentrate to the production profile once construction is completed in early 2025.

Greenbushes is owned by Talison Lithium, a JV between US major Albermarle Corporation and JV partner Tianqi Lithium and IGO. As their client, Melchor Contracting will be responsible for:

  • Detailed Earthworks
  • Formwork
  • Reinforcement
  • Concrete
  • Supply & Installation of Cast-In items & HD Bolts
  • Installation of Primary Crusher Drainage & ROM Backfill
  • Installation of the Fine Ore Stockpile Tunnel

Expected Key Highlights of the Project include:

  • Primary Crusher (18m+ high)
  • FOS Tunnel (54m+ long)

The project comprises nearly 20,000m3 of concrete, 3,700t of reinforcement, and over 145,000m3 of detailed and bulk earthworks.