Mystery looms over loud booms

Clintonville, Wis. A series of underground booms and explosions rattled the nerves of residents in this small city this week, sending police and public officials searching for a cause. Resident Al Miller likened the sounds to ā€œa heavy-duty thunderstorm,ā€ while a neighbor said it ā€œsounded like a bomb had gone off.ā€ On three successive nights, loud sonic disturbances roused people […]

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