Anadolu Agency says the body of the sixth miner, Sedat Bulut, was recovered from the copper mine on today.
The privately-owned mine in southeastern Siirt province caved in late Thursday. Rescue crews are working to reach 10 miners still missing, although a government official said on Friday that hopes of finding them alive are slim.
Six people were detained yesterday on charges of negligence and the operating company's operations manager was formally arrested today.
Energy Minister Berat Albayrak says the government is using the "latest state-of-the-art technology and equipment" to proceed with rescue operations "at full speed".