Article: Bat havens becoming major tourist attraction in United States.(Originated from Knight Ridder Newspapers)

ELLWOOD CITY, Pa. _ While snow was dusting the entrance of the abandoned limestone mine, Cal Butchkoski and the others unlocked the gate and slithered their vessels into the thin opening that led to the first of a half-dozen underground ponds _ and then to total darkness.

``We put the bats in yesterday,'' cracked Bob Correll, 38, a maintenance supervisor with the Pennsylvania Game Commission.

``Good enough,'' replied Butchkoski, 42, a commission wildlife technician. ``Did you remember to lick them real good before you stuck them to the walls?''

Last June, the commission constructed the gate at this mine 25 miles northwest of Pittsburgh ...

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