Core Lithium is developing the mine, having completed a pre-feasibility study (PFS) in June 2018 and a definitive feasibility study (DFS) in April 2019. Revisions to the feasibility study were completed in 2020 to incorporate underground mining methods in the mining plan. A revised DFS was completed in July 2021 outlining a project that will occur in multiple stages. The first stage will involve open-pit mining near Grants and Hang Gong, as well as underground mining at the Grants, BP33, and Carlton
prospects. The Australian
JORC 2012 compliance process estimated 3.45 million tonnes (Mt) of mineral resource at 1.4 percent
lithium oxide. Battery-grade
lithium hydroxide was produced as part of the test works on
spodumene mineral concentrate sample from the mine in April 2021. Construction began in 2021 and full operational mining commenced in October 2022, with the first shipment of spodumene concentrate being exported from
Port Darwin in May 2023. Development of the mine is an $89 million project. Over the 12-year lifespan of the project of ore == Production and sales ==