Vallecito Reservoir, Colorado Archive Search Results
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Dragline excavating in Borrow Pit No. 2, Area No. 1. Location 47+50/16+75. Material is being placed in zone 1 of the embankment.
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Stripping topsoil from Area No. 8 in Borrow Pit No. 2 at station 51+00/13+40, using both a Le Tourneau Carryall and a bulldozer.
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Shovel excavating in Borrow Pit No. 2, Area No. 8 at station 53+00/13+00. Material is being placed in zone 1 of the embankment.
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Lima shovel excavating in Borrow Pit No. 2, Area 8. Shovel cut approximately 17 feet. Location 62+50/17+00. Material is for zones 1 and 3 of embankment.
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Dragline excavating in Borrow Pit No. 2, station 56+75/12+50. Contractor chose to make two cuts in this area. Note face of first shovel cut in background.
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Shovel excavating second cut in Borrow Pit No. 2, station 65+50/16+50. Average depth of second cut is 12 feet.
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Rock quarry 6 miles upstream from the dam where riprap will be obtained. Broken rock at left is a result of the first blast.
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Excavating and loading rock at borrow pit for dumped riprap on upstream slope of embankment.
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Loading riprap at rock borrow pit.
330. Vehicle at Work
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Depicts a vehicle performing unknown duties on dam construction site.
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Looking along axis toward right abutment from sta. 0+00. (Photographic Point No. 3). Average elevation of embankment in foreground is 7672. Refer to Pine R - 383.
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Rolling No. 3 material after materials have been spread and the oversize rock removed with a rock rake.
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Looking toward right abutment from station 19+50, 30 ft. right of axis at the upstream No. 2 section of embankment. To the right of this section are piled the cobbles recovered from one lift of embankment in the upstream part of No. 2 zone. This section was approximately 50 feet wide when the photograph was taken.
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Rolling Zone 2 (clay ) material from Borrow Pit No. 1 at station 13+00, six feet upstream from axis. This material was approximately one per cent on the dry side of optimum moisture, and had a field cylinder penetration resistance of 1150.
335. Filling embankment
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Placing material (clay ) from Borrow Pit No. 1 in Zone 2 of the embankment. The material was close to optimum moisture. Note the excellent condition of the fill for hauling.
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Looking toward left abutment along upward slope of embankment from sta. 37+25. Slope is being trimmed to grade with a Le Tourneau scraper.
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Dumping No. 1 material (See Pine R - 292) on embankment. Oversize rock will be removed in spreading and combing the material with a rock rake.
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Dumping and spreading No. 1 material from Borrow Pit No. 2 on the embankment. Note the small percentage of oversize rock.
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Bulldozer trimming upstream slope of embankment preparatory to placing rock riprap.
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Spreading No. 3 material on the embankment.