Practical Tunnelling : Explaining in Detail, the Setting Out of the Works; Shaft-Sinking, and Heading Driving; Ranging the Lines, and Levelling under Ground; Sub-Excavating, Timbering; and the Construction of the Brickwork of Tunnels | lit.salon
Practical Tunnelling : Explaining in Detail, the Setting Out of the Works; Shaft-Sinking, and Heading Driving; Ranging the Lines, and Levelling under Ground; Sub-Excavating, Timbering; and the Construction of the Brickwork of Tunnels