Visual Materials
Big Creek - Mammoth Pool - Concrete pour at entrance of diversion tunnel
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Big Creek - Mammoth Pool - Placement of concrete forms prior to pour at diversion tunnel entrance
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Big Creek - Mammoth Pool - Placement of concrete forms prior to pour at diversion tunnel entrance
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Big Creek - Mammoth Pool - Placement of concrete forms prior to pour at diversion tunnel entrance.
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Big Creek - Mammoth Pool - Concrete pour at diversion tunnel portal at night.
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