Dateline’s main asset is its wholly owned Colosseum Gold and Rare Earths Project, situated in San Bernardino County, California, United States. It also owns 100% of the Argos Strontium Project, also located in San Bernardino County.

Gold

The Company acquired the Colosseum Project from Barrick Gold in 2021, recognising its gold potential. The project suspended production in 1993 after producing 344,000 ounces of gold from a pre-mining resource of 1.1 million ounces. When mining operations ended in 1992, the mine transitioned to stockpile processing for the last six months of operation. At the time, the gold price stood at US$340 per ounce, roughly 10% of the current spot price.

Dateline undertook a comprehensive digitisation and validation of historical data, which had remained dormant for nearly 30 years, before initiating an extensive mineral resource drilling campaign. Diamond drilling confirmed substantial widths of high-grade mineralisation at depth, including 100.6m @ 4.16g/t Au in CM22-05 and 63.2m @ 10.28g/t Au in CM23-08.

In June 2024, the Company announced a JORC-2012 Mineral Resource Estimate of 27.1Mt at 1.26g/t Au (0.0447oz per short ton), equating to 1.1 million ounces of contained gold.

A Scoping Study released in May 2025 outlined a robust gold mining operation, projecting production of 635,000 ounces over eight years, with net revenues of US$827 million, a NPV6.5% of US$550 million, and an IRR of 61%. The technical aspects of the study were based on a gold price of US$2,200 per ounce, with the economics estimated using a gold price of US$2,900 per ounce.

A Bankable Feasibility Study is currently underway for the Colosseum Gold Mine, with development planned within existing vested Mining Rights and an approved Plan of Operation, with the Company having the approvals required to commence mining at Colosseum.

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Rare Earths

Beyond its gold resource, Dateline has demonstrated that the geology at Colosseum shares a genetic link with Mountain Pass – the only active rare earth mine in the United States, located 10km to the south.

In early 2025, the United States Department of the Interior publicly recognised Colosseum as a critical strategic asset, calling it “America’s second rare earth mine.” The project has since attracted interest due to its role in bolstering national security and its potential to help reduce reliance on Chinese-controlled rare earth supply chains.

Extensive mapping, geophysical and geochemical anomalies have generated targets to be assessed with drilling.

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Strontium

Argos is a shallow, bedded celestite deposit located on the southern flank of the Cady Mountains, about 100 kilometres from Dateline’s Colosseum Gold and Rare Earths Project.

In September 2025, Dateline moved to 100% ownership of the Argos Strontium Project, also located in San Bernardino County. Argos contains the largest known strontium deposit in the United States. With uses including magnets for EVs and defence applications, Argos is a strategic pipeline asset for the company.

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