Drillcon Iberia’s shaft boring operation at Somincor
- Publishing Date
- 09 Nov 2011 10:28am GMT
- Author
- Mining Magazine
Drilling & Blasting
Two mining ventilation shafts, each more than 600m deep and 4m in diameter, are being bored at the Somincor copper ore mine in Portugal. Specialist contractor Drillcon Iberia is using Sandvik reaming heads to bore the shafts.
The mine, which is located close to Castro Verde some 58km north of Portugal’s Algarve region, has been open for 25 years and is currently owned by Lundin Mining. The mine’s copper production peaked at 2.4Mt of ore and 0.7Mt of waste in 2010. Drillcon Iberia is currently boring its two deepest shafts to date, at 615m and 630m respectively.
It employs both bench-and-fill and drift-and-fill stoping methods underground, and has some 800m of underground workings and 160km of tunnels. The mine covers four established working areas, named after the nearby villages of Graça, Corvo, Zambujal and Neves. Development production also began last year on a fifth area, designated Lombador.
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