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Reports of homes shaking in Lyons coincided with controlled blast at Cemex—Longmont Times-Call 2/6/21,11:32 AM <br /> Geophysicists Jana Pursley, with the United State Geological <br /> Survey in Golden, said that a small "seismic signal,"was <br /> detected. The signal was picked up at two stations — one <br /> northwest of Glen Haven and roughly 27 miles from Lyons, and <br /> the second northwest of Idaho springs and roughly 31 miles <br /> from Lyons. Pursley said she was not able to determine what <br /> the cause of the signal was. <br /> Representatives with Lyons Sandstone and Loukonen Bros. <br /> Stone Co. verified that they didn't have any activity Friday that <br /> could have caused the rumble. <br /> https://www.timescall.com/2021/02/03/reports-of-homes-shaking-in-lyons-coincided-with-controlled-blast-at-cemex/ Page 3 of 6 <br />