Wire sawing works executed to cut off a shaft head

The complete shaft cover with a thickness of 0.67 m was horizontally cut off from a 12 m deep shaft with a 8.80 m Ø by means of a wire saw. The shaft cover was sawn up into 4 parts of 4.6 t each and dismantled using a truck-mounted crane.  The wire saw was used because the shaft walls had a thickness of up to 0.90 m. The works were carried out within two days.