- Base metal explorer Castillo Copper said initial assay results at the Big One deposit in Queensland, Australia, had verified oxide-sulphide, shallow copper mineralisation, up to 4.14% of copper.

The presence of shallow copper mineralisation augments previously recorded intercepts up to 28.4%, the company said. This was a 'highly encouraging start to the company's maiden drilling campaign at the Big One deposit, the company said.

Looking ahead, the company said assay results for the full seven drill-holes completed were being finalised and expected to be returned shortly.

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