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Finniss Lithium Project BP33 Underground Mine Proposed Variations

Proponent: Lithium Development (Grants) Northern Territory Pty Ltd

Overview

The Proposal is located at two adjacent mine sites, Grants Lithium Project (Grants) and the Finniss Lithium Project BP33 Underground Mine (BP33) on the Cox Peninsula, approximately 33 km west of the Berry Springs townsite in the Northern Territory. The Proposal is to:

  • increase the depth of BP33 underground mine by 530 m, from 320 metres below ground level (mbgl) to 850 mbgl
  • extend the life of mine from 4 years to a period of up to 12 years
  • increase the total mined ore from 2.09 Mt to 10.1 Mt
  • maintain the Grants open-cut and processing facility as a centralised ore processing, waste handling and water storage hub (with the same extended life of mine to service the BP33 operation)
  • develop a pipeline to transport slurry between Grants and BP33.

The Proposal area is located on Parcel Section 1 Hundred of Parsons, and Section 2746 Hundred of Hughes. Grants mine site is associated with mineral leases ML31726 (mining and processing infrastructure), ML32074 (Observation Hill Dam pipeline route) and ML32278 (mine site dam). BP33 mine site is also associated with ML32074 (OHD pipeline and site access) and has mining leases ML32346 (mine and mine infrastructure) and MLN16 (Cox Peninsula Road) allocated.

Stage 1: Referral

NT EPA notices

Public consultation on the referral

Please refer to the NT EPA consultation.

Referral Type
Referral form - BP33 expansion project PDF 4.8 MB
Referral report - BP33 expansion project PDF 7.3 MB
Appendix A - NTEPA Self-Assessment Referral Form PDF 5.8 MB
Appendix B - Finniss Lithium - Contextual Summary PDF 3.1 MB
Appendix C - Paste Pre-Feasibility Report PDF 7.8 MB
Appendix D - AAPA Authority Certificate C2019-024 (withheld*)
Appendix E - MF362 Admixture SDS PDF 170.3 KB
Appendix F - Environmental and Social Risk Assessment PDF 91.5 KB
Appendix G - Community Engagement Report PDF 9.1 MB
Appendix H - Annual Riparian Monitoring Report 2025 PDF 43.7 MB
Appendix I - Traffic Impact Assessment Study PDF 10.6 MB
Appendix J - Integrated Water Balance Study PDF 5.4 MB
Appendix K - BP33 Underground Mine Flood Modelling PDF 4.0 MB
Appendix L - BP33 Underground Mine Erosion and Sediment Control Plan (WRM, 2025) PDF 4.6 MB
Appendix M - Groundwater Model Update – Core Lithium Grants and BP33 Mine Groundwater Dewatering Model Update (Artesium, 2026) PDF 13.6 MB
Appendix N - Groundwater Model Update - Independent Peer Review (AGE, 2026) PDF 1.1 MB
Appendix O - Mine affected water ultra-trace analyses PDF 1.5 MB
Appendix P - Dust Extinction Moisture analytical reports PDF 101.3 KB
Appendix Q - Finniss Lithium Operation – Greenhouse Gas Assessment Summary Report PDF 1.1 MB

In accordance with section 281(2)(b) of the Environment Protection Act 2019, the Aboriginal Areas Protection Authority (AAPA) Certificate (Appendix D) that forms part of the referral information for Finniss Lithium Project BP33 Underground Mine Proposed Variations has been withheld from publication.

Last updated:
14 May 2026

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