FILE - In this Dec. 13, 2014 file photo the Portland skyline is visible on the west bank of the Willamette River in Portland, Ore. The city of Portland has released a map and database showing about 1,800 unreinforced masonry buildings that may be vulnerable to shaking during an earthquake if they are not structurally retrofitted. These buildings were generally constructed before the 1960's using brick with little to no steel reinforcement in the walls. (AP Photo/Don Ryan, file)
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