UnknownOccurrence • Sand and Gravel, Construction
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UnknownOccurrence • Sand and Gravel, Construction
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UnknownOccurrence • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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Burlington Pit & PlantProducer • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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Erker PitProducer • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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ChicagoPast Producer • Gold
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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Parmer PitProducer • Sand and Gravel, Construction
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Johnson PitProducer • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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Ponsardine ShaftPast Producer • Lead
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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Martens PitUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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UnkUnknown • Sand and Gravel, Construction
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