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Archival description
Major Matthews collection Coquitlam (B.C.) Dams With digital objects
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Coquitlam Dam

Photograph negative is a copy of a cross section diagram of the dam, showing: rock fill in upstream and downstream toes; location of original dam buried in new structure; and the equivalent cross section of a concrete dam. Negative was created in order to produce a lantern slide of the image.

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