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Portland, Oregon 1st and Main skyscraper construction. A video showing the use of a vibrohammer to hammer pilings into the ground for shoring
1,306 views
Portland, Or 1st and Main construction site Friday 11Jan08 13:30
890 views
Excessive precipitation within a short time interval leads to unexpected results. May be a waterfall. The density of the particular area of the st...
6,155 views