State police at investigating an incident at a mining site in Schuylkill County.

Troopers at the Frackville barracks said multiple windows were broken on a dragline at a site south of Middleport borough.

The incident occurred sometime between April 12 and 19. Joseph Cromyak, 73, of Brockton, is the listed owner of the dragline.

Damages were estimated at $500.