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rob_eavis: Old miners' pick marks in entrance stope
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rob_eavis: Ginged wall
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rob_eavis: Hauling grooves below ginged roof
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rob_eavis: Slickensides in entrance stope
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rob_eavis: Calcite on mud plus small phreatic roof tube
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rob_eavis: Old miners' pick marks in Calypso Cavern
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rob_eavis: Old miners' pick marks in Calypso
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rob_eavis: Transition between two bedding planes
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rob_eavis: Clear pool
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rob_eavis: Paul in Lower Series