Federal and state mining agencies and other officials are investigating the death of a worker who was killed yesterday inside a mine in Horton, Elk County.

Randy E. Huey, 43, of Rossiter, was pronounced dead by Elk County Deputy Coroner Robert Sorg at the Rosebud Mining Company's Little Toby mine in the village of Brockport, off Route 219. State police said Mr. Huey was killed at 1:30 p.m. after he was pinned between the mine wall and a piece of equipment about two miles inside the mine.

The federal Mine Safety and Health Administration, the state Department of Environmental Protection's Bureau of Mine Safety, the coroner's office and state police are investigating the cause of the accident.