Definition of "opencast" []

• Of or pertaining to strip mining, in which material is removed from a surface that has been exposed (adjective)

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• "Sinosteel, another Chinese-owned metals conglomerate, has plans to develop a massive opencast iron ore mine in the Weld range, a ridge of hills 400 miles north-east of Perth."
• "Under the plans, ministers agreed to keep a permanent stockpile of at least six months 'supply of coal, increase coal imports, build more oil-burn, nuclear and gas-fired power stations and encourage development of more opencast mines."
• "The only other working goldmine in the UK is in County Tyrone, Northern Ireland, an opencast site near Cavanacaw which uses the same strata of rock at Cononish."