Hill, A., 2012. Coal a chronology for Britain. A Monograph of the Northern Mine Research Society, British Mining No.94, p.39.
MJ 1870 p. 32, 109, 129, 147, 149, 169
Mining & Smelting Magazine II August 1862 p. 110-111.
Hill, A., 2012. Coal a chronology for Britain. A Monograph of the Northern Mine Research Society, British Mining No.94, p.39.
MJ 1870 p. 32, 109, 129, 147, 149, 169
Mining & Smelting Magazine II August 1862 p. 110-111.