Master Drilling Secures Twin-Shaft Contract at Somincor Copper-Zinc Mine, Completes First 630 m Pilot Hole

Published: Sep 11, 2026 10:46

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Master Drilling announced a contract with Portuguese copper-zinc miner Boliden Somincor to construct two raisebored shafts, each 630 m deep and 4.5 m in diameter. The contract marks the company’s first project in Portugal.

The first 630 m pilot hole has been completed in 24 days using a single pilot bit throughout the operation, supported by the Micon RVDS guidance system. Master Drilling described the achievement as a company record.

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