DNR says McCook quarry in blasting limits

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Congressman Dan Lipinski, who represents the southwest side and some surrounding suburbs, wants a federal investigation into a tremor on Monday.  Lipinski claims the tremor was due to improper blasting at a quarry in McCook.

The Illinois Dept of Natural Resources’ Office of Mines and Minerals Blasting and Explosives Unit completed its investigation of the tremor and says the Hanson Material Service corporation’s federal quarry in McCook did not violate and state laws in its Monday blasting.

The tremor was measured at a magnitude of 3.2 by the U.S. geological survey.

The agency said the shock waves were not the result of an earthquake but caused by the quarry blast at 12:35 in the afternoon.

Hanson Material reported a separate seismic event that happened seven seconds after its blast.

Lipinski wants a federal investigation into whether the tremor was caused by the blast and if the company violated any regulations governing the use of explosives.

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