Rex Minerals Limited engages in mineral exploration, evaluation, and development, primarily focused on copper-gold and gold projects. The company holds 100% ownership of the flagship Hillside copper-gold-iron oxide project on the Yorke Peninsula in South Australia, which features an open-pit mine design with concentrator processing for copper and gold concentrates over a projected 13-year mine life; it also owns the Hog Ranch gold property in Nevada, USA, offering camp-scale surface and underground epithermal gold opportunities with indicated and inferred resources exceeding 2.2 million ounces. Rex Minerals operates in the mining industry, targeting base and precious metals deposits in Australia and the United States. Founded in 2007 and headquartered in Ardrossan, South Australia, the company became a subsidiary of MACH Metals Australia Pty Ltd following a A$393 million scheme of arrangement implemented in October 2024, resulting in its delisting from the ASX; recent developments include a letter of intent with Nittetsu Mining in December 2023 for Hillside investment, a road construction contract with McMahon Services Australia in August 2024, US BLM approval for Hog Ranch operations in May 2024, and ongoing financing and offtake discussions for Hillside advancement.