Four teenage boys, trapped for hours in an abandoned mine shaft in eastern Pennsylvania, have been rescued.
Police said the teens were pulled to safety after a seven-hour rescue involving at least 50 emergency workers from the area.
Topton Fire Chief Randy Sicher said one of the teens fell down a 100-foot shaft early Saturday and was knocked unconscious. His three companions then climbed down to him and became trapped.
The boys were taken to a hospital for treatment of hypothermia, and for the head injury.