Cornish Telegraph 7.2.1872 21.1.1874
Dines, H.G. The Metalliferous Mining Region of South-West England, Vol. I, p.44, 467-469.
Dines, H.G. The Metalliferous Mining Region of South-West England addenda and corrigenda, 1988, Vol. I p.xlvi.
Kelly’s Directory 1873 Mines now being worked.
List of Mines 1859-1861.
List of Mines 1863-1873.
McDonald, D. 1951. Percival Norton Johnson. The Biography of a Pioneer Metallurgist Johnson, Matthey & Co. Ltd, London. p.57, 59, 62, 65.
MJ 1835 p.14, 21, 30, 38, 45, 53, 61, 77, 88, 108, 118, 126, 133, 141.
MJ 1836 vol. ii p.6, 15, 25, 33, 41, 47, 57, 64, 72, 80, 89, 97, 105, 113, 121, 131, 142, 151, 161, 165, 173, 184, 185, 193, 201, 211, 220, 229.
MJ 1836 vol. iii p.5, 22, 29, 37, 45, 53, 61, 70, 77, 85, 93, 101, 109, 117, 125, 138, 145, 156, 158, 165, 173, 182, 198, 205, 213, 221, 229.
MJ 1837 vol. iv p.5, 13, 21, 30, 40, 45, 59, 70, 77, 86, 93, 105, 113, 116, 117, 124, 132, 133, 137, 137, 140, 142, 145, 148, 149, 156, 157, 162, 165, 169, 172, 173, 181, 190, 195, 206, 214.
MJ 1837 vol. v p.5, 19, 42, 51, 77, 93, 110, 125, 142, 157, 174, 189, 205.
MJ 1838 vol. vi p.22, 38, 53, 69, 77, 85, 101, 117, 132, 133, 134, 140, 147, 150, 162, 182, 197.
MJ 1838 vol. vii p.5, 21, 37, 54, 69, 85, 101, 118, 133, 150, 165, 181, 197, 206.
MJ 1839 vol. viii p.13, 27, 46, 66, 86, 92, 92, 93, 100, 101, 108, 113, 116, 117, 124, 139, 140, 149, 157, 158, 166, 179, 195.
MJ 1839 vol. ix p.2, 22, 30, 43, 62, 69, 85, 102, 118, 134, 147, 163, 182, 194.
MJ 1840 p.6, 19, 51, 66, 78, 85, 95, 102, 110, 118, 126, 129, 132, 140, 147, 150, 163, 223, 228, 234, 266-267, 279, 298, 315, 331, 347, 363, 381, 395, 411.
MJ 1841 p.23, 34, 53, 89, 92, 100, 108, 113, 116, 132, 137, 139, 187, 191, 193, 198, 233, 236, 244, 377, 380, 388, 396, 403.
MJ 1842 p.33, 36, 44, 52, 60, 73, 105, 108, 113, 116, 121, 128, 132, 140, 147, 185, 193, 289
MJ 1846 p.378
MJ 1870 p.44, 84, 161
MJ 1871 p.9, 45, 125, 132, 149, 169, 259-260, 261, 263, 329, 405, 516, 568
MJ 1872 p.100
MJ 1874 p.4, 60, 313
MJ 1877 p.130
MJ 1880 p.119, 125, 232
MJ 1886 p.21
MJ shares listed 1835-1842.
MJ shares listed 1870-1874.
Mining Review 1838 vol. iv p.60.
Mining Review 1840 vol. vi p.15.
Mining Review 1840 vol. vii p.55.
Reports of the Inspectors of Mines List of Mines 1873-1874.
Western Morning News 1.1.1874 16.1.1874
Or: Polbreen Mining Co. Polbreen Tin and Copper Mining Co.
See also: New Kitty Mine. New Polbreen Mine. North Polbreen Mine.