Visual Materials
Portal Powerhouse - Progress picture
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Portal Powerhouse - Progress picture
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Portal Powerhouse - Progress picture - First day of outage. Section of 12' diameter outlet pipe cut out and extending skid rails into tunnel for pulling penstock.
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Portal Powerhouse
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Portal Powerhouse - Progress picture showing excavation in progress in powerhouse and weir area.
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Portal Powerhouse
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Portal Powerhouse - Construction progress of powerhouse.
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Portal Powerhouse - Forebay
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Portal Powerhouse - Forebay - Progress picture placing fill in dike embankment.
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Portal Powerhouse
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Portal Powerhouse - Progress - powerhouse construction, mobile crane excavating foundation for by-pass section of building.
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Portal Powerhouse - Progress picture showing lower end of Potter Creek diversion returning to main channel just upstream from highway bridge.
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