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La Colle Falls - "coffer dam removed"
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La Colle Falls - construction
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La Colle Falls - construction camp
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La Colle Falls - "crack in north wall of lock"
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La Colle Falls - dam construction
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La Colle Falls - dam construction building
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La Colle Falls - "entrance to lock"
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La Colle Falls - "erecting first crest and apron forms"
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La Colle Falls - "first breach in upstream coffer dam"
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La Colle Falls - "framework n. wall of lock"
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La Colle Falls - "intake excavation and forms"
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La Colle Falls - "Intake: first concrete"
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La Colle Falls - "Intake: first concrete"
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La Colle Falls - "intake floor"
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La Colle Falls - King George V