Before revision: Mysłowice coal mine shaft tower, Upper Silesian Coal Basin Underground mining Mantrip used for transporting miners within an underground mine Caterpillar Highwall Miner HW300 – Technology Bridging Underground and Open Pit Mining Sub-surface mining consists of digging tunnels or shafts into the earth to reach buried ore deposits.
After revision: upMysłowice coal mine shaft tower, Upper Silesian Coal Basin Underground mining Mantrip used for transporting miners within an underground mine Caterpillar Highwall Miner HW300 – Technology Bridging Underground and Open Pit Mining Sub-surface mining consists of digging tunnels or shafts into the earth to reach buried ore deposits.