08:54 AM EDT, 05/21/2025 (MT Newswires) -- Tintina Mines ( TNNTF ) said Wednesday that it commenced its 2025 drilling campaign of up to 6,000 meters at the Domeyko Sulfuros project in Chile.

The campaign aims to upgrade a portion of the inferred resources to the measured and indicated categories, the company said.

Tintina said it will also advance geometallurgical studies, metallurgical and geomechanical testing to support the preparation of a preliminary economic assessment, which is expected to be completed by the end of 2025.

Tintina's share price gained 4.3% on Tuesday to $0.245 on the TSXV.