Oregonian: Earthquake warning signs required in brittle Portland buildings starting next year - je.st - Oregonian: Earthquake warning signs required in brittle Portland buildings starting next year

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Oregonian: Earthquake warning signs required in brittle Portland buildings starting next year

2018-10-10 21:34:51| PortlandOnline

News story posted to oregonlive.com October 10, 2018.

Tags: year required starting warning

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