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open pit mine, Tag
- Abandoned Canadian Open-Pit Mine Could Be Turned Into 400 Megawatt Pumped Storage Hydroelectric Plant Fri, 22 Feb 13, 3:32amHydroelectric power can be a very efficient way to produce or augment renewable energy. But if you don’t have a nearby river that’s big enough to dam—that’s where pumped storage comes in. Using the power...