30 April – Breakthrough on 2.5-mile (4.0 km) tunnel 500 metres (1,600 ft) under the Firth of Forth to link the colliery at
Valleyfield, Fife, to the modern coal processing facilities at Kinneil colliery near
Bo'ness.[2][3][4]
30 April – Breakthrough on 2.5-mile (4.0 km) tunnel 500 metres (1,600 ft) under the Firth of Forth to link the colliery at
Valleyfield, Fife, to the modern coal processing facilities at Kinneil colliery near
Bo'ness.[2][3][4]