Water flowed from the upper storage pond over the water wheel to drive the mill.
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It was driven by a 9.1 m diameter waterwheel driven from the upper storage pond.
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The steam engine recycled the water up from the lower storage pond to the upper storage pond.
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One of the open-waste storage ponds contains significant quantities of plutonium.
Times, Sunday Times
Those include storage ponds for plutonium and other forms of nuclear waste that were deposited in the 1950s and 1960s with little regard for the future.
Times, Sunday Times