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Pyongyang, Three Revolution Exhibition: channelling machine.
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Pyongyang, Three Revolution Exhibition: front loader.
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Pyongyang, Three Revolution Exhibition: drill rigs.
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State Refinery Pyongyang: silver bar (front side), 20 gram, 999 fineness.
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State Refinery Pyongyang: silver bar (rear side), 20 gram, 999 fineness.
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Sedimentary mordenite from an undisclosed North Korean locality.
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