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La Grange

'Earthquake' likely a quarry blast in McCook

La Grange, IL

What initially was described as earthquake tremors was more than likely the effects of blasting at the Material Service Quarry in McCook at about 1 p.m. today.

Numerous reports from several west suburban communities were received  just after 1 p.m. when the rumbling was felt. Quarry officials said it was just about the time that blasting was being conducted at the site.

The U.S. Geological Survey measured the blast  at 2.7 on the Richter scale at the quarry.

USGS officials originally thought the tremors were caused by an earthquake.

La Grange Police Chief Michael Holub said he was having lunch downtown outside of Palmer's Place when he felt the tremor.

"It was like if you were standing on La Grange Road and a truck went by and hit the biggest pot hole," Holub said. "It was more like rumbling than an explosion."

Staff members in the Village Hall also reported feeling a large jolt and first thought it might be an air conditioning compressor kicking in, Holub said.

The police department received about 10 calls from residents, two of whom reported some damage as a result of the blast.

Holub urges anyone with similar concerns to call the Lyons Township Quarry Complaint Line at  1-866-934-3278.



U.S. Geological Survey
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