Two more bodies of miners killed in West Germany's worst coal mine explosion in 26 years have been recovered, raising the official death toll in the June 1 blast to 50, the mine management announced Friday.

A spokesman for the lignite mine in the Hessian town of Borken, 65 miles northeast of Frankfurt, said one body was found late Thursday and the other early Friday.

Only one miner of the 57 cut off 285 feet underground by the explosion still was unaccounted for and the search continued.

Six of the 57 miners were found June 4, 65 hours after the explosion, in an air pocket where poisonous carbon monoxide fumes did not penetrate.

The mine's management said they believed the cause of the disaster was a coal dust explosion. But it was not known what ignited the coal dust.