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1.
Pacific Northwest Economic Base Study for Power Markets - Forest Industries
2.
Pacific Fisherman Vol 3 Annual Yearbook
3.
Pacific Fisherman Vol 3, No 11
4.
Initial attack of larval stages of Teredo navalis on experimental piling planted July1, 1920, at Southern Pacific wharf, Port Costa, examined August 4, 1920....
5.
Oil piling at Banker's Warehouse at Crockett, showing burrows of Xylotrya setacea and attack of Teredo navalis (at right). Pulled December 2, 1920
6.
Creosoted ferry slip piling, attacked by Limnoria where creosote zone was cut through in construction
7.
Piling being protected by Paraffine-Paint method. N. W. P. R.R., 1920
8.
Untreated douglas fir piling in Oakland Estuary, destoyed by Limnoria. Good piles shown are replacements
9.
Keegan's Trap Net Support.
The cables are anchored at each end, the slack being taken up by block and tackle. The support is gotten up for the purpose of holding trap nets on reefs and places where piling cannot be driven, but can also be used on any kind of a location.
At the end of the season, the piling can be taken up without much difficulty and placed on the beach in the vicinity of the location, where they can be scraped and painted or tarred, and used again for several seasons.
This is a great advantage, as, at the present time the life of a pile is about two years. Every ten feet on the web in the lead and hearts, a shove-down pole is made fast and from the bottom of the pole on each side a guy line leads down through a block at the foot of the pile, and is made fast ont he pile above high water. The shove-down pole is also made fast at the top to the cable.
At the corners of the hearts, pots and spillers, three piling are placed in position, so as to support the cross cables.
The weights and anchors can be made of boulders or any material having sufficient weight for the purpose. The weight of the anchors and foot weights, and the distance and spread of the piling, will depend upon the location and current
10.
Main Report: Columbia-North Pacific Region Comprehensive Framework Study
11.
Review Report on the Columbia-North Pacific Region Comprehensive Framework Plan
12.
Pacific Fisherman Vol 1, No 06
13.
Driving steel piling, Grand Coulee Dam construction, 1935
14.
Inner surface of 1" redwood sheathing, submerged 20 months in Pearl Harbor. Martesia striata coming through from outside. Looking through empty burrows, note small openings, through which borers entered. At upper left is seen a strip of tarred ship felt whicch they have penetrated
15.
Sample of 12" x 12" timber submerged in Pearl Harbor. Split surface showing damage by Teredo parksi and Martesia striata, the latter organisms still in place in burrows
16.
Section through jacket showing borer holes in close proximity. One borer (Pholadidea penita) in place in burrow
17.
Sample of concrete pile-jacket containing four borers (Pholadidea penita) in a space of 3 inches square. Two of the borers are visible, presence of the others being indicated by openings at lower left
18.
Creosoted pile destroyed by Limnoria, which entered through a bolt hole and adjacent dog holes
19.
Section through creosoted fender pile attacked by Limnoria, which gained entrance through bolt hole
20.
End view of ... girt section..., showing attack by Teredo which entered the untreated wood exposed by framing
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