COMPANY NAME

LOCATION

Area

YEAR

Class

Box No

Company No

A.D. Lead Mining Co. Ltd Muker Yorkshire 1874 BT31 1954 8229
Aamdal Copper Mines Syndicate Ltd Norway 1898 BT31 8158 58967
Aawudwa Mines Syndicate Ltd 1901 BT31 9441 70147
Abbey Lands (Isle of Man) Silver Lead Mining Co. Ltd Onchan Isle of Man 1874 BT31 2022 8762
Abbontiakoon (Wassaw) Mines Ltd Ghana 1901 BT31 9317 69242
Abbotts Blende & Lead Mining Co. Ltd Glamorganshire 1878 BT31 2458 12533
Aberdaunant Lead Mining Co. Ltd Llanidloes Montgomeryshire 1869 BT31 1501 4661
Aberdovey Mines Co. Ltd Aberdovey Merionethshire 1870 BT31 1528 4829
Aberduna Lead Mines Ltd Mold Flintshire 1882 BT31 3040 17239
Aberfeldy Mining Co. Ltd Perthshire 1910 BT31 13295 110371
Abergele Copper & Silver Ore Co. Ltd Llanfair Talhaiarn Denbighshire 1884 BT31 3381 20199
Abergele Copper Ore Co. Ltd Llanfair Talhaiarn Denbighshire 1889 BT31 4542 29742
Aberllyn Mining Co. Ltd Gwydr Caernarvonshire 1878 BT31 2435 12339
Abernant Silver Lead Mining Co. Ltd Rheidol Valley Cardiganshire 1861 BT31 603 2522
Abertham Mining Co. Ltd Bohemia 1863 BT31 759 329C
Aberystwith Silver Lead Mining Co. Ltd Ponterwyd Cardiganshire 1872 BT31 1716 6239
Aberystwyth Silver Lead Mines Ltd. Aberystwith Cardiganshire 1909 BT31 18927 103976
Abomposu Mining Syndicate Ltd 1918 BT31 24087 150688
Abou Lake Mining Co. Ltd 1919 BT31 24590 154871
Acari Copper Mines Syndicate Ltd Acari Peru 1895 BT31 6233 44176
Acetylene Gas & Electric Smelting Co. Ltd 1900 BT31 8939 65930
Achill Plumbago & Talc Co. Ltd Mayo Ireland 1882 BT2 1180
Ackworth Featherstone Purston & Sharlston Gas Co. Ltd Featherstone Yorkshire 1873 BT31 1820 7041
Acme Mines Ltd 1906 BT31 11393 87421
Acton’s Swaziland Concession Ltd South Africa 1889 BT31 15019 29829
Adamant Diamond Mining Co. Ltd South Africa 1881 BT31 2763 15054
Adams’ Small Arms Co. Ltd 1872 BT31 996 1529C
Adansi Consolidated Mines Ltd Ghana 1902 BT31 9898 73758
Adargas Mining Co. Ltd 1911 BT31 20052 116130
Adelaide Mining Association South Australia Adelaide Australia BT41 5 24
Adeline Mines Ltd 1902 BT31 10008 74788
Adiawso Mining Co. Ltd 1937 BT31 37547 326922
African & Mexican Mines Development Co. Ltd Africa 1904 BT31 10938 83042
African Consolidated Mines Ltd Africa 1882 BT31 3025 17121
African Diamond Mining Co. Ltd Africa 1881 BT31 2744 14898
African Exploration & Investment Co. Ltd Africa 1889 BT31 4576 29961
African Investment Corporation Ltd Africa 1887 BT31 3797 23775
African Mines Acquisition Syndicate Ltd Africa 1902 BT31 9921 73966
African Mines Development Co. Ltd Africa 1888 BT31 4062 25964
African Mines Investment Co. Ltd Africa 1895 BT31 6403 45213
African Mines Ltd Africa 1905 BT31 11254 85990
African Mines Purchase & Improvement Co. Ltd Africa 1895 BT31 6374 45016
African Mining & General Syndicate Ltd Africa 1911 BT31 13569 115125
African Prospecting Syndicate Ltd Africa 1902 BT31 10103 75668
African Prospecting Syndicate Ltd Africa 1890 BT31 4680 30814
African Prospecting Syndicate Ltd Africa 1888 BT31 4048 25842
African Smelting & Refining Co. Ltd Africa 1926 BT31 32750 213074
Agatine Mining Co. Ltd 1920 BT31 25757 165823
Agriculture, Forestry & Mining Co. Ltd 1912 BT31 20874 123784
Ajax (Big Indian) Silver Mining Co. Ltd U.S.A. 1871 BT31 1616 5484
Akim Mining Concessions Ltd 1909 BT31 12938 105309
Akrokerri Ashanti Mines Ltd Africa 1900 BT31 9199 68229
Akropong (Ashanti) Mines Ltd Africa 1901 BT31 9365 69555
Alabaster Mining Co. Ltd 1919 BT31 25172 160126
Aladdin Mines Ltd 1884 BT31 3282 19350
Alamillos Co. Ltd Linares Spain 1863 BT31 754 303C
Alamillos Co. Ltd Linares Spain 1904 BT31 10685 80933
Alamillos Co. Ltd Linares Spain 1907 BT31 12089 94625
Alaska Consolidated Mines Ltd Alaska U.S.A. 1904 BT31 10903 82747
Alaska Mining Syndicate Ltd Alaska U.S.A. 1913 BT31 21241 127212
Alaska Southern Lode-Mining Syndicate Ltd Alaska U.S.A. 1912 BT31 13980 124252
Albert Mines Syndicate Ltd 1895 BT31 6348 44848
Albert New Mill Cotton Spinning Co 1874 BT31 14477 8131
Alda Copper Mines Ltd 1900 BT31 8964 66160
Alda Mining & Smelting Co. Ltd 1898 BT31 31809 59784
Alderley Edge Copper Lead & Cobalt Mining & Land Co. Ltd Alderley Cheshire 1865 BT31 986 1475C
Alderley Edge Mining Co. Ltd Alderley Cheshire 1859 BT31 417 1609
Alderley Edge Mining Co. Ltd Alderley Cheshire BT41 11 56
Alderley Mining Co. Ltd Alderley Cheshire 1911 BT31 13561 114940
Alert Mining Syndicate Ltd nd BT2 4197
Alexander Thomson & Co. Ltd 1888-1899 BT2 1709
Alexandra Mining Syndicate Ltd 1910 BT31 13141 108278
Alfarena Mine Ltd 1907 BT31 11980 93483
Alfred Mines Ltd Cornwall 1906 BT31 17716 88163
Algerian Prospecting Co. Ltd 1889 BT31 4442 28915
Algoma Silver Mining Co. Ltd 1871 BT31 1604 5392
Alhamilla (1907) Mining Co. Ltd 1907 BT31 12023 93901
Alice Proprietary Mines (Rhodesia) Ltd 1899 BT31 8416 61236
Allen & Burnhouse Gill Mining Co. Ltd Durham 1882 BT31 3040 17238
Allendale Metalliferous Mining Co. Ltd Northumberland 1950 BT31 38623 489642
Aller Silver Lead Mining Co. Ltd Christow Devon 1875 BT286 410
Alliance Mining Corporation Ltd 1927 BT31 37724 221655
Allithwaite Iron Mining Co. Ltd Allithwaite Lancashire 1872 BT31 1796 6842
Allt y Crib Mining Co. Ltd Tal-y-bont Cardiganshire 1859 BT31 394 1485
Allt y Crib Mining Co. Ltd Tal-y-bont Cardiganshire BT41 15 80
Allt y Crib Silver Lead Mining Co. Ltd Tal-y-bont Cardiganshire 1871 BT31 1659 5818
Alltymaen Mining Co. Ltd Wales BT41 13 70
Alltymaen Mining Co. Ltd Wales 1859 BT31 414 1596
Alluvial & General Mining Co. Ltd 1927 BT31 29752 219621
Almada & Tirito Consolidated Silver Mining Co. Ltd Mexico 1870 BT31 1513 4732
Almada Silver Mining Co. Ltd Mexico 1869 BT31 1450 4313
Almaden Antimony & Lead Mining Co. Ltd 1900 BT31 9080 67207
Almaraz Tin Mining & Smelting Co. Ltd 1896 BT31 6876 48364
Almeria Mining Development Syndicate Ltd nd BT2 3467
Almodovar Copper Mining Co. Ltd Portugal 1880 BT31 2637 13988
Almodovar Lead Mines Syndicate Ltd Portugal 1900 BT31 8893 65468
Alston Moor Mining Co. Ltd Alston with Garrigill Cumberland 1873 BT31 1892 7602
Alston Prospecting Syndicate Ltd Alston with Garrigill Cumberland 1914 BT31 22228 135371
Alston United Mining Association Ltd Alston with Garrigill Cumberland 1880 BT31 2631 13947
Alten & Quaenagen Mining Co. Ltd 1858 BT31 347 1258
Alten & Quaenangen Mining Co. Ltd BT41 14 76
Alten Mining Co BT41 13 75
Alto Douro Silver Lead Mining Co. Ltd 1866 BT31 1254 3027
Alvavel Silver Mining & Smelting Co. Ltd 1871 BT31 1621 5519
Alvenny Mining Co. Ltd Altarnun Cornwall BT41 15 81
Alvenny Mining Co. Ltd Altarnun Cornwall 1858 BT31 340 1221
Alviggan & Burngullow Tin Mining Co. Ltd St Stephen in Brannel Cornwall 1875 BT286 411
Alys Mine Olve: Ltd 1911 BT31 20090 116459
Amalgamated Eisteddfod West Minera Twelve Apostles & Rock Mining Co. Minera Denbighshire 1863 BT31 825 661C
Amalgamated Mining & Mercantile Syndicate Ltd 1910 BT31 13475 113218
Amalgamated Smelters Ltd 1923 BT31 28057 192033
Amalgamated West African Mines Ltd 1905 BT31 11314 86588
Ambrose Lake Tin & Copper Mining Co. Ltd St Neot Cornwall 1872 BT286 258
American Belle Mines Ltd Colorado U.S.A. 1890 BT31 4932 32874
American Exploration & Development Corporation Ltd U.S.A. & Mexico 1890 BT31 4742 31317
Amherst Mine Syndicate: Ltd 1898 BT31 7802 55802
Amnodd & Nantddu Lead Mining Co. Ltd Llanycil Merionethshire 1873 BT31 1917 7865
Anatolia Mining Corporation Ltd 1936 BT31 35679 311135
Anchor Tin Mine Ltd 1909 BT31 18712 101453
Anchor Tin Mine Ltd 1902 BT31 9895 73735
Anchor Tin Mine Ltd 1895 BT31 6280 44462
Andacaba (Bolivia) Silver Mines Ltd Bolivia 1890 BT31 4842 32115
Andalusian & General Syndicate Ltd Spain 1905 BT31 11024 82783
Andalusian Antimony Mines Ltd Spain 1903 BT31 10341 77813
Andalusian Silver Mining Co. Ltd Spain 1892 BT31 5337 36579
Andalusian Silver Mining Co. Ltd Spain 1887 BT31 3995 25421
Anderton Tin Mining Co Whitchurch Devon 1888 BT286 592
Anderton Tin Mining Co Whitchurch Devon 1888 BT286 124
Anderton United Tin Mining Co. Ltd Whitchurch Devon 1888 BT286 594
Anderton United Tin Mining Co. Ltd Whitchurch Devon 1888 BT286 130
Andes Prospecting Syndicate Ltd 1911 BT31 20365 119188
Andros Mining Co. Ltd 1926 BT31 29707 218469
Anglesea Copper Mining Co. Ltd Anglesey 1860 BT31 523 2094
Anglesea Mining Trust Ltd Anglesey 1884 BT31 3303 19518
Anglo Abyssinian Trading & Mining Co. Ltd 1924 BT31 28738 200976
Anglo African Diamond Mining Co. Ltd 1881 BT31 2838 15606
Anglo Algerian Mining & General Produce Co. Ltd 1870 BT31 1523 4801
Anglo American & Brazilian Mines Trust Ltd 1923 BT31 27883 189658
Anglo American Land Mortgage & Agency Co. Ltd U.S.A. 1886 BT31 3065 17465
Anglo Argentine Co. Ltd Argentina 1867 BT31 1373 3790
Anglo Argentine Mining Smelting & Refining Co. Ltd Argentina 1899 BT31 8345 60655
Anglo Argentine Tramways Co. Ltd Argentina 1887 BT31 2296 11078
Anglo Austrian “Platinum” Anti-Corset Co. Ltd 1897 BT31 7586 54125
Anglo Austrian Bituminous Rock Paving Co. Ltd 1871 BT31 1619 5502
Anglo Austrian Exploration Co. of Western Australia Ltd 1895 BT31 6439 45411
Anglo Austrian Exploration Syndicate Ltd 1891 BT31 5228 35487
Anglo Austrian Gas Co. Ltd 1874 BT31 1976 8430
Anglo Austrian Magnesite Co. Ltd 1912 BT31 20590 121334
Anglo Austrian Mining Co. Ltd 1927 BT31 29774 220181
Anglo Austrian Mining Co. Ltd 1927 BT31 29774 220181
Anglo Austrian Mining Co. Ltd 1897 BT31 7541 53721
Anglo Austrian Petroleum Co. Ltd 1885 BT31 3430 20657
Anglo Austrian Petroleum Syndicate Ltd 1910 BT31 13387 111850
Anglo Austrian Syndicate Ltd 1900 BT31 8936 65892
Anglo Austrian Syndicate Ltd 1923 BT31 28051 191950
Anglo Austrian Tin Co. Ltd Bohemia 1888 BT31 4068 26014
Anglo Austrian Water Supply Co. Ltd 1874 BT31 1932 8000
Anglo Brazilian Bolivian Syndicate Ltd Bolivia 1911 BT31 20067 116255
Anglo Brazilian Concessions Syndicate Ltd Brazil 1922 BT31 27603 186055
Anglo Brazilian Corporation Ltd Brazil 1906 BT31 11660 90164
Anglo Brazilian Diamond Syndicate Ltd Brazil 1902 BT31 9986 74577
Anglo Brazilian Exploration & Trading Co. Ltd Brazil 1920 BT31 25481 163016
Anglo Brazilian Iron & Steel Syndicate Ltd Brazil 1919 BT31 32345 161409
Anglo Canadian Minerals Prospecting Syndicate Ltd 1908 BT31 18446 98152
Anglo Canadian Phosphate Co. Ltd Canada 1886 BT31 14819 22260
Anglo Columbian Mines Syndicate Ltd Columbia 1900 BT31 8881 65367
Anglo Eastern Oil & Mining Syndicate Ltd 1919 BT31 25327 161461
Anglo Espana Co. Ltd Spain 1880 BT31 2626 13911
Anglo French Financial & Mining Syndicate Ltd 1912 BT31 14015 125426
Anglo French Mining & Financial Corporation Ltd 1910 BT31 13150 108399
Anglo French Moorish Mines Syndicate Ltd 1906 BT31 11426 87800
Anglo French Porcelain Co. Ltd 1862 BT31 294 1016
Anglo French Prospecting Co. Ltd 1907 BT31 11859 92191
Anglo French Prospecting Syndicate Ltd 1887 BT31 4000 25440
Anglo French Quicksilver & Mining Concession (Kwei-Chau Province) of China Ltd 1906 BT31 17696 87866
Anglo Hibernian General Mining Co Ireland 1852 BT41 22 106
Anglo Ibero Mining Co. Ltd 1919 BT31 25290 161142
Anglo Italian Mining Co. Ltd Italy 1867 BT31 1342 3573
Anglo Italian Talc & Plumbago Mines Co. Ltd Italy 1897 BT31 7559 53878
Anglo Mexican Exploration Syndicate Ltd Mexico 1898 BT31 7967 57224
Anglo Mexican Mining Co. Ltd Mexico 1883 BT31 3218 18783
Anglo Montana Mining Co. Ltd Montana U.S.A. 1886 BT31 3694 22978
Anglo Moroccan Mining Syndicate Ltd 1910 BT31 19288 108057
Anglo Oriental Mining Corporation Ltd Bootle Lancashire 1928 BT31 35428 228073
Anglo Peruvian Mining & Smelting Co. Ltd Peru 1873 BT31 1872 7424
Anglo Russian Mining Corporation Ltd 1914 BT31 22505 137597
Anglo Sardinian Antimony Co. Ltd Italy 1887 BT31 3796 23763
Anglo Sardinian Land Mining & Timber Co. Ltd Italy 1884 BT31 3316 19648
Anglo Sardinian Mining Co. Ltd Italy 1865 BT31 1069 1933C
Anglo Spanish Association Ltd Spain 1887 BT31 3827 24054
Anglo Spanish Concessions Syndicate Ltd Spain 1902 BT31 10027 74996
Anglo Spanish Copper Co. Ltd Spain 1907 BT31 17965 91579
Anglo Spanish Copper Co. Ltd Spain 1872 BT31 1747 6488
Anglo Spanish Development Co. Ltd Spain 1926 BT31 29489 213600
Anglo Spanish Estates & Industries Syndicate Ltd Spain 1909 BT31 13022 106474
Anglo Spanish Exploration Syndicate Ltd Spain 1897 BT31 7307 51727
Anglo Spanish Founders Ltd Spain 1908 BT31 12257 96472
Anglo Spanish Gas Co. Ltd Spain 1886 BT31 3762 23457
Anglo Spanish Industrial Corporation Ltd Spain 1910 BT31 13294 110338
Anglo Spanish Lead & Zinc Mining Syndicate Ltd Spain 1915 BT31 22706 139286
Anglo Spanish Metal Co. Ltd Spain 1914 BT31 22528 137788
Anglo Spanish Mining Reduction Works & Finance Syndicate Ltd Spain 1888 BT31 4277 27747
Anglo Spanish Oil Syndicate Ltd Spain 1909 BT31 12741 102499
Anglo Spanish Oilfields Ltd Spain 1923 BT31 28218 193937
Anglo Spanish Salt Syndicate Ltd Spain 1899 BT31 8551 62253
Anglo Spanish Smelting & Silver Mining Co. Ltd Spain 1860 BT31 509 2025
Anglo Spanish Soda Mining Co. Ltd Spain 1860 BT31 496 1964
Anglo Spanish Soda Mining Co. Ltd Spain BT41 22 111
Anglo Spanish Syndicate Ltd Spain 1908 BT31 12314 97144
Anglo Spanish Tartar Refineries Ltd Spain 1920 BT31 25923 167480
Anglo Spanish Tin Streaming & Mining Co. Ltd Spain BT41 22 112
Anglo Spanish Tin Streaming & Mining Co. Ltd Spain 1860 BT31 474 1845
Anglo Transvaal Mines Ltd Transvaal South Africa 1905 BT31 11094 84469
Anglo Transvaal Mining Corporation Ltd Transvaal South Africa 1939 BT31 35749 354329
Anglo Transvaal Prospecting Co. Ltd Transvaal South Africa 1889 BT31 4314 28031
Anglo Ural Mining Syndicate Ltd 1914 BT31 22175 134956
Anglo Venezuelan Prospecting Co. Ltd 1923 BT31 27833 189032
Anglo Westralian Mines Ltd 1895 BT31 6477 45633
Anita Mines Ltd Colombia 1886 BT31 3756 23416
Anna Maria Mining Co. Ltd Cornwall 1861 BT31 587 2439
Annan Mining Co. Ltd 1868-1873 BT2 285
Annick Lodge Oil Co. Ltd 1885-1891 BT2 1431
Annotto Bay Mining Association Co BT41 22 114
Antimony Leasing Syndicate Ltd MN 1894 BT31 5866 41187
Antimony Mining Co. Ltd Cornwall 1907 BT31 11977 93453
Antrim Iron Ore Co. Ltd Co. Antrim Ireland 1872 BT31 4338 28169
Aosta Central Mining Co. Ltd 1907 BT31 11936 92995
Apatite Mines of Norway Ltd Norway 1905 BT31 11310 86537
Appalachian Co. Ltd North Carolina U.S.A. 1885 BT31 3516 21419
Appaluchian Tin Mine Ltd 1897 BT31 7445 52894
Appankran Consolidated Mines Ltd 1903 BT31 10180 76337
Appantoo Mines Ltd 1900 BT31 9275 68932
Appletreewick Consolidated Lead Mines Co. Ltd Appletreewick Yorkshire 1881 BT31 2894 16062
Appletreewick Lead Mining Co. Ltd Appletreewick Yorkshire 1870 BT31 1539 4902
Aquilas Smelting Co. Ltd 1886 BT31 3603 22167
Ardilla Copper Mines Ltd 1899 BT31 8639 62986
Ardtully Copper & Silver Lead Mining Co Ireland 1852 BT41 24 125
Area Consolidated Tin & Copper Mining Co. Ltd BT41 24 127
Arendal Mining & Smelting Co. Ltd Norway 1878 BT31 2401 12005
Arenillas Copper Mines Ltd 1903 BT31 10141 76011
Argentella Mines Ltd 1886 BT31 3638 22450
Argentella Mines Ltd 1890 BT31 4795 31748
Argentine Mining Trust Ltd Argentina 1886 BT31 3766 23495
Argus Concessions Ltd Mount Wellington Cornwall 1926 BT31 32782 217003
Argyle Mining Co. Ltd Argyllshire 1861-1881 BT2 88
Arivaca Mining Co. Ltd Arizona U.S.A. 1869 BT31 1497 4643
Arizona Copper Co. Ltd Arizona U.S.A. 1884 BT2 1375
Arizona Copper Co. Ltd Arizona U.S.A. 1882-1892 BT2 1144
Arltunga Mines Ltd 1903 BT31 10255 77014
Armagh Lead Mining Co. Ltd Ireland 1870 BT2 326
Arnoya Mining Co. Ltd 1907 BT31 31964 92482
Aroa Mines Ltd 1896 BT31 6895 48498
Arsenic of Spain Co. Ltd Spain 1912 BT31 13957 123704
Arsenious & Sulphurous Ore Reduction Co. Ltd Cornwall 1866 BT31 1208 2749C
Artilligan Zinc & Lead Mining Co. Ltd Tarbert Argyllshire 1862 BT2 111
Asbestos Mining Trust Ltd 1929 BT31 30430 236649
Asbestos Proprietary Mines Ltd 1906 BT31 11502 88620
Asgard Mining Co. Ltd Ireland 1909 BT31 18724 101592
Asgard Mining Company Ltd Ireland 1909 BT31 18724 101592
Ashanti Mines Ltd Nigeria 1901 BT31 9315 69233
Ashanti Sansu Mine Ltd Nigeria 1900 BT31 9029 66802
Ashburton Tin & Copper Mining Co. Ltd Ashburton Devon 1872 BT286 288
Ashcroft Anglesey Copper Mining Co. Ltd Holyhead Anglesey 1861 BT31 533 2142
Asia Minor Mining Co. Ltd Turkey 1881 BT31 2792 15263
Assheton Mining Co. Ltd Abersoch Caernarvonshire 1869 BT31 1483 4535
Assheton United Mining Co. Ltd Abersoch Caernarvonshire 1881 BT31 2864 15792
Associated Mines of Gippsland Ltd 1898 BT31 8105 58476
Associated Mines of North Kalgoorlie Ltd Australia 1896 BT31 7012 49407
Associated Mining & Finance Co. Ltd 1925 BT31 35335 203265
Associated Tamworth Mines Ltd Staffordshire 1899 BT31 8344 60645
Astor Alliance Mines Ltd Colorado U.S.A. 1886 BT31 3783 23636
Astor Consolidated Silver Mining Co. Ltd 1882 BT31 3052 17334
Asturian Haematite Iron Ore Syndicate Ltd Asturia Spain 1898 BT31 7872 56400
Asturian Manganese Mining Co. Ltd Asturia Spain 1880 BT31 2656 14135
Astyra Mining Co. Ltd Turkey 1888 BT31 4205 27201
Atchison Mining Co. Ltd 1875-1880 BT2 639
Atlanta Silver Mining Co. Ltd Idaho U.S.A. 1871 BT31 1588 5246
Atlantic Copper Mining Co. Ltd Dhurode Ireland 1880 BT31 2689 14449
Atlas Development & Mining Co. Ltd nd BT2 3584
Atlas Mining & Smelting Co. Ltd Ilsington Devon 1862 BT31 651 2743
Atlas Tin Mining Co. Ltd Ilsington Devon 1899 BT31 16241 62982
Atlas Tin Mining Co. Ltd Ilsington Devon 1889 BT31 4495 29368
Atome Extended Mines 1902 BT31 10041 75087
Atome Mines Ltd 1901 BT31 9442 70150
Attasi Mines Ltd 1900 BT31 8959 66128
Auckland Bros. Ltd Woolley Yorkshire 1926 BT31 29518 214323
Aucustan Mining Syndicate Ltd 1915 BT31 22948 141270
Aurum Co. Ltd South Africa 1889 BT31 4338 28169
Aurum Ltd 1931 BT31 33289 259577
Austin Consolidated Silver Mines Ltd California U.S.A. 1865 BT31 1124 2258C
Austral Tin Mining Co. Ltd 1908 BT31 12478 99141
Australasian Alkaline Reduction & Smelting Syndicate Ltd 1889 BT31 4579 29983
Australasian Mines Investment Co. Ltd Australia 1873 BT31 1916 7853
Australasian Mines Royal Co Australia BT41 32 180
Australasian Prospecting & Development Syndicate Ltd 1925 BT31 29313 209703
Australasian Prospecting Syndicate Ltd 1900 BT31 8943 65964
Australian Broken Hill Consols Ltd New South Wales Australia 1888 BT31 4054 25904
Australian Mechanised Prospecting Co. Ltd Australia 1935 BT31 33621 305426
Australian Mining Co (Part 1) Australia BT41 35 203
Australian Mining Co (Part 2) Australia BT41 36 203
Australian Pyrites Smelting Co. Ltd Australia 1883 BT31 3211 18726
Australian Smelting Co. Australia BT41 36 210
Australian Smelting Corporation Ltd Australia 1905 BT31 11343 86855
Auxiliary Mining Syndicate Ltd 1907 BT31 11955 93187
Avala Quicksilver Mines Ltd Servia 1889 BT31 4444 28932
Avino Mines of Mexico Ltd Mexico 1899 BT31 8347 60663
Avino Mines of Mexico Ltd Mexico 1903 BT31 10199 76495
Avoca Syndicate Ltd Avoca Ireland 1912 BT31 20837 123492
Axim Mines Ltd 1897 BT31 7309 51738
Axim Western Mines Syndicate Ltd 1901 BT31 9325 69304
Axton Mining Co. Ltd Llanasa Flintshire 1861 BT31 589 2451
B.C. Smelting & Transport Syndicate Ltd Canada 1898 BT31 8192 59278
Babbs & Briggs Ltd 1914 BT31 22286 135880
Baberton Development Syndicate Ltd 1895-1900 BT2 2976
Bacup Cotton Mill & Mining Co. Ltd Bacup Lancashire BT41 38 219
Bacup Cotton Mill & Mining Co. Ltd Bacup Lancashire 1860 BT31 460 1770
Bagillt Smelting Co. Ltd Mold Flintshire 1864 BT31 918 1112C
Bagillt Spelter Co. Ltd Mold Flintshire 1881 BT31 2858 15745
Bagillt Zinc Smelting Co. Ltd Mold Flintshire 1882 BT31 3056 17373
Bagtor Mining Co. Ltd Ilsington Devon 1862 BT31 623 2611
Bailen Mining Co. Ltd SI 1873 BT31 1904 7723
Bakrobo Mine Ltd 1901 BT31 9510 70657
Balaghat Mysore Mines Ltd India 1894 BT31 5794 40614
Baldwin Mining Co. Ltd Baldwin Isle of Man 1862 BT31 678 2890
Baldwin New Mining Co. Ltd Baldwin Isle of Man 1869 BT31 1487 4571
Ball Eye Mining Co. Ltd Bonsall Derbyshire 1860 BT31 458 1764
Ball Eye Mining Co. Ltd The Cromford Denbighshire BT41 40 228
Balla Balla Copper Mines Ltd 1898 BT31 8160 58991
Ballacorkish Silver Lead & Copper Mining Co. Ltd Rushen Isle of Man 1866 BT31 1256 3042
Ballarat & Lyell Mines Ltd Australia 1903 BT31 10155 76143
Ballintogher Quarries Ltd Ireland 1882 BT31 2923 16302
Ballycumisk Mining & Smelting Co. Ltd Co. Cork, Schull Ireland 1904 BT31 10731 81332
Ballycummisk Copper Mining Co. Ltd Co. Cork, Schull Ireland 1872 BT31 1744 6458
Ballyhickey Mining Co. Ltd Ireland 1907 BT31 11838 91973
Ballymoneen Copper & Sulphur Mining Co. Ltd Ireland 1856 BT31 211 652
Ballymoneen Copper & Sulphur Mining Co. Ltd Wicklow Ireland 1856 BT41 40 229
Ballyvirgin Mining Co. Ltd Ireland 1858 BT41 41 232
Ballyvirgin Mining Co. Ltd Ireland 1858 BT31 338 1210
Balmynheer Tin Mining Co. Ltd Wendron Cornwall 1892 BT286 162
Balmynheer Tin Mining Co. Ltd Wendron Cornwall None State BT286 381
Balmynheer Tin Mining Co. Ltd Wendron Cornwall 1874 BT286 380
Baltic Lead Mines Ltd 1912 BT31 13984 124387
Bamboo Queen & Reward Mines Ltd 1896 BT31 6632 46659
Bampfylde Mining Co. Ltd North Molton Devon 1871 BT286 211
Bancourt Mine Ltd 1902 BT31 9930 74051
Banket Mines Ltd 1900 BT31 9302 69153
Banque Des Mines Et De L’Industrie Ltd 1890 BT31 4892 32527
Bantry Bay Barytes Quarry Co. Ltd Cork Ireland 1872 BT31 1720 6276
Baoule’ (Ivory Coast) Consolidated Mines Ltd Cork Ireland 1902 BT31 9881 73626
Barancannes Copper Mining Co. Ltd Portugal 1883 BT31 3110 17852
Barbados Manjak Mines Ltd Barbados 1900 BT31 8919 65736
Barkly West Diamond Mines Ltd 1902 BT31 10038 75056
Barossa Range Mining Co BT41 46 266
Barrabore Mining Co. Ltd BT41 46 265
Barramia Mining & Exploration Ltd 1909 BT31 18931 104032
Barravore Mining Co. Ltd Ireland 1858 BT31 369 1355
Barrow Mining Co. Ltd Barrow in Furness Cumberland 1884 BT31 3375 20141
Baryta Ltd 1911 BT31 20032 115959
Barytes & Lead Co. Ltd Ireland 1895 BT31 6485 45674
Basinghall Mining Syndicate Ltd Plain Vol. Glenridding Westmorland 1936 BT31 40771 314471
Bassakey Mines Ltd 1901 BT31 9538 70864
Basset & Grylls Ltd Wendron Cornwall 1907 BT31 11922 92879
Basset and Grylls (1909) Ltd Redruth Cornwall 1909 BT31 12974 105822
Basset Mines Ltd Redruth Cornwall 1896 BT31 15559 46500
Basye Consolidated Silver Mining Co. Ltd Nevada U.S.A. 1873 BT31 1831 7131
Bathgate Oil Co. Ltd Scotland 1883-1896 BT2 1292
Batopilas Mining Smelting & Refining Co. Ltd 1909 BT31 12875 104397
Batopilas Mining, Smelting & Refining Co. Ltd 1909 BT31 12875 104397
Battishall Silver Lead Mining Co. Ltd Lydford and Bridestowe Devon 1873 BT286 351
Battle Mountain Mining Co. Ltd Nevada U.S.A. 1869 BT31 1467 4440
Bavarian Lead Mining Co. Ltd Bavaria Germany 1879 BT31 2491 12807
Bavarian Mines Exploration Co. Ltd 1898 BT31 8101 58434
Bay Copper Mines Ltd 1902 BT31 9742 72565
Bayley’s Mines Ltd 1903 BT31 10390 78250
Beach Tin Deposits Ltd Gwythian Cornwall 1928 BT31 33848 229884
Beana McKubwa Copper Mining Co. Ltd 1922 BT31 32507 179461
Bearhaven & Tracton Mineral Co. Ltd Ireland BT41 48 279
Bearhaven & Tracton Mineral Co. Ltd Ireland 1857 BT31 247 810
Beariz Tin Streaming Co. Ltd Spain 1861 BT31 567 2324
Beaver Silver Mining Co. Ltd 1872 BT31 1732 6368
Beckman Mines Ltd 1902 BT31 9846 73382
Beddgelert Mining Co Beddgelert Caernarvonshire BT41 48 282
Bedford United Mining Co. Ltd Tavistock Devon 1877 BT286 448
Bedford United Mining Co. Ltd Tavistock Devon 1888 BT286 96
Beja Copper Mines Ltd SI 1889 BT31 4328 28121
Belalcazar Silver-Lead Co. Ltd 1883-1890 BT2 1217
Belcher Mining Co. Ltd 1882 BT31 3047 17298
Beldon & North Derwent Mining Co. Ltd Hunstanworth Durham 1860 BT31 478 1867
Beldon & North Derwent Mining Co. Ltd Hunstanworth Durham BT41 49 285
Belfast Mining Co Ireland 1868 BT41 49 289
Belgrave & Black Mountain Amalgamated Lead Mining Co. Ltd Llanarmon Denbighshire 1878 BT31 2441 12386
Bell Abbey & Falcon Cliff Mines Ltd Colby Isle of Man 1876 BT31 2210 10409
Bell Metal Mining Co. Ltd 1909 BT31 12652 101396
Bell Vean Tin & Copper Mining Co. Ltd Gwennap Cornwall 1879 BT286 465
Bellavista Silver Mining Co. Ltd Peru 1871 BT31 1616 5478
Belowda Beacon Tin Mining Co. Ltd Roche Cornwall 1872 BT286 277
Belowda Hill Tin Mining Co. Ltd Roche Cornwall 1871 BT286 232
Belowda Tin Mining Co. Ltd Roche Cornwall 1880 BT286 482
Belstone Mining Co. Ltd Belstone Devon 1869 BT286 178
Belt Copper Mines Ltd Michigan U.S.A. 1882 BT31 3019 17064
Benderg Mining Co. Ltd 1856 BT31 22 112
Benderg Mining Co. Ltd BT41 51 298
Bengal Mills Co. Ltd Bengal India 1883 BT31 14447 6778
Benjamin Briggs & Co. Ltd 1910 BT31 13047 106923
Bensberg Lead Mining & Smelting Co. Ltd 1872 BT31 1692 6067
Benzol & By Products Ltd Wakefield Yorkshire 1920 BT31 37281 165036
Benzol & By Products Ltd Wakefield Yorkshire 1920 BT31 37282 165036
Berehaven Copper Mines Ltd Aleihies Ireland 1902 BT31 9747 72605
Berehaven Syndicate Ltd Aleihies Ireland 1906 BT31 11581 89400
Berenguela Silver Lead Mines Ltd 1911 BT31 19852 114046
Berlanga Silver Lead Mining Co. Ltd 1876 BT31 2292 11050
Bernando Mining Syndicate Ltd 1920 BT31 26016 168459
Berrida (Nigeria) Tin Fields Ltd Gwennap, Poldice Cornwall 1912 BT31 20521 120704
Berrier Mining Co. Ltd Cleator Moor Cumberland 1907 BT31 18013 92254
Bethel Diamond Mines Ltd 1904 BT31 10766 81613
Bett’s Cove Mining Co. Ltd 1878-1891 BT2 860
Bettws y Coed Lead Mining Association Ltd Bettws-y-Coed Caernarvonshire 1877 BT31 2391 11894
Beuno Consols Co. Ltd Holywell Flintshire 1881 BT31 2862 15777
Bewerley United Lead & Barytes Mining Co. Ltd Bewerley Yorkshire 1887 BT31 3963 25153
Bi Metallic Mines Ltd 1897 BT31 7205 50960
Bickerton Copper Mines Syndicate Ltd Bickerton Cheshire 1907 BT31 12138 95163
Bickerton Mining Co. Ltd Bickerton Cheshire 1861 BT31 579 2396
Bickleigh Vale Phoenix Copper & Tin Mining Co. Ltd Bickleigh Devon 1860 BT31 450 1741
Bickton Silver Lead & Manganese Mining Co. Ltd St Ive Cornwall 1879 BT31 2583 13553
Bideford Black Ltd Bideford Devon 1928 BT31 33032 235737
Billin’s Lead Mining Co. Ltd Halkyn Flintshire 1861 BT31 536 2164
Bincliffe & Castern Lead Mines Warslow Staffordshire 1853 BT41 57 321
Bincliffe & Castern Mining Co. Ltd Warslow Staffordshire 1859 BT31 384 1429
Bingara Syndicate Ltd 1894-1898 BT2 2666
Biobra Mining Co. Ltd 1907 BT31 11898 92602
Bipposu Mines Ltd 1902 BT31 10079 75437
Birch Tor & Vitifer Ltd North Bovey Devon 1904 BT31 17231 80871
Bird’s Swaziland Concession Ltd South Africa 1889 BT31 4343 28194
Birkenhead Barytes Co. Ltd Cheshire 1876 BT31 2190 10255
Birmingham & Harrowbarrow Mining Co. Ltd St Mellion Cornwall 1882 BT31 3083 17630
Birmingham Smelting Co. Ltd 1889 BT31 4309 28002
Biscay Mining Co. Ltd 1872 BT31 1704 6143
Bismuth & Copper Mining Co. of South Australia Ltd 1864 BT31 1035 1742C
Bissoe Syndicate Ltd Bissoe Cornwall 1889 BT31 4457 29042
Bissoe Tin Smelting & Arsenic Co. Ltd Bissoe Cornwall 1890 BT31 15075 31460
Black Craig Consolidated Mining Co. Ltd Newton Stewart Kirkcudbrightshire 1867 BT31 1322 3441
Blackdown Mining Co. Ltd Cornwall 1874 BT286 377
Blackett’s Mines Ltd 1897 BT31 7681 54832
Blackett’s Mines Ltd 1899 BT31 8556 62309
Blaen Caelan Co. Ltd Tal-y-bont Cardiganshire 1870 BT31 1520 4772
Blaen Caelan Co. Ltd Tal-y-bont Cardiganshire 1872 BT31 1786 6762
Blaen Caelan United Lead Mines Co. Ltd Tal-y-bont Cardiganshire 1878 BT31 2406 12048
Blaen Twymyn Mining Syndicate Ltd Llanbrynmair Montgomeryshire 1886 BT31 3601 22146
Blaen United Mining Co. Ltd Blaencennant Cardiganshire 1872 BT31 1674 5931
Blaen y Glynn Silver Lead Mining Co. Ltd Wales 1870 BT31 1508 4704
Blaendyffryn Silver Lead Mining Co. Ltd Goginan Cardiganshire 1865 BT31 1178 2566C
Blamey Consols Tin Mine Ltd Cornwall 1898 BT31 7703 55014
Blencowe Consols Tin Mining Co. Ltd Grampound Road Cornwall 1871 BT286 218
Blende Mining Co. Ltd MN 1892 BT31 5384 37034
Blisworth Iron Stone Mining Co. Ltd Blisworth Northants 1859 BT31 431 1668
Blisworth Iron Stone Mining Co. Ltd Blisworth Northants BT41 68 374
Bluebell (Rossland) Mine Ltd 1900 BT31 9135 67651
Bluiman Consolidated Copper Mining Co. of South Australia Ltd 1862 BT31 611 2569
Boccheggiano Copper Mines Ltd 1888 BT31 4182 27036
Bodcol Lead Mining Co. Ltd Devil’s Bridge Cardiganshire 1857 BT31 236 762
Bodcol Lead Mining Co. Ltd Devil’s Bridge Cardiganshire BT41 68 377
Bodfari Hematite Iron Mining Co. Ltd Bodfari Denbighshire 1874 BT31 1947 8158
Bodidris Mining Co. Ltd Llanarmon-yn-Ial Denbighshire 1876 BT31 2260 10800
Bodithiel Silver Lead Mining Co. Ltd St Pinnock Cornwall 1873 BT286 349
Bodmin Tin Co. Ltd Bodmin Cornwall 1884 BT31 3359 20019
Bog Lead Mining Co Wentnor Shropshire 1857 BT41 68 378
Bog Lead Mining Co Wentnor Shropshire BT41 68 379
Bog Lead Mining Co. Ltd Wentnor Shropshire 1859 BT31 421 1624
Bog Mines Ltd Wentnor Shropshire 1907 BT31 18097 93343
Bog Mining Co. Ltd Minsterley Shropshire 1871 BT31 1602 5374
Bog Mining Co. Ltd Wentnor Shropshire 1857 BT31 245 802
Bohemian Mining Corporation Ltd Bohemia 1906 BT31 11784 91447
Bohemian Tin Mining Co. Ltd Bohemia 1877 BT31 2381 11818
Bolckow Vaughan & Co. Ltd Cleveland Yorkshire 1887 BT31 30734 1705C
Bolingey Tin Mines Ltd Bolingey Cornwall 1894 BT31 5792 40600
Bolivian Silver Co. Ltd Bolivia 1888 BT31 4292 27848
Bon Accord Copper Mining Co. Ltd South Australia Australia 1857 BT31 276 937
Bon Accord Copper Mining Co. Ltd South Australia Australia 1857 BT41 70 388
Bonancita Syndicate Ltd 1896-1907 BT2 3092
Bonmahon Copper Mines Development Syndicate Ltd Ireland 1905 BT31 11305 86495
Bonmahon Copper Mines Development Syndicate Ltd Ireland 1905 BT31 11305 86495
Boonwood Mining Co. Ltd 1906 BT31 17827 89616
Borlase Consols Tin Mining Co. Ltd St Just Cornwall 1861 BT31 543 2201
Borrowdale Black Lead Co. Ltd Seathwaite Lancashire 1861 BT31 579 2397
Borrowdale Plumbago Mines & Manufacturing Co. Ltd Seathwaite Lancashire 1887 BT31 3819 23965
Boscaswell Downs Tin & Copper Mines Association Ltd St Just Cornwall 1871 BT286 247
Boscaswell United Tin & Copper Mines Ltd St Just Cornwall 1907 BT31 18115 93593
Boswin Mines Ltd Wendron Cornwall 1908 BT31 18431 97946
Bosworthen & Penzance Consols United Mining Co. Ltd Sancreed Cornwall 1866 BT286 131
Bosworthen Tin Mining Co Sancreed Cornwall BT41 72 399
Bosworthen Tin Mining Co. Ltd Sancreed Cornwall 1860 BT31 483 1903
Botallack Ltd St Just Cornwall 1911 BT31 13551 114749
Botallack Mines Ltd St Just Cornwall 1906 BT31 11710 90698
Boulder Junction Mines Ltd 1898 BT31 8103 58450
Boulder Prospecting Syndicate Ltd 1896 BT31 6999 49290
Bourse Des Mines Ltd 1890 BT31 4683 30838
Bourse Des Mines Ltd 1890 BT31 4661 30643
Bowden Hill Manganese Mining Co Brentor Devon 1873 BT286 318
Bowling Iron Co. Ltd Bradford Yorkshire 1870 BT31 1541 4917
Brada Mines Ltd Port Erin Isle of Man 1882 BT31 3048 17307
Brada United Mining Co. Ltd Port Erin Isle of Man 1861 BT31 576 2378
Bradford Vale Mining Co. Ltd Birchover Derbyshire 1919 BT31 24327 152565
Bradley Brothers Ltd Castleton Yorkshire 1900 BT31 9201 68241
Bradley Whinstone Quarries Ltd Castleton Yorkshire 1920 BT31 13413 112237
Bradwell Moss Rake Mining & Lead Ore Smelting Co. Ltd Bradwell Derbyshire 1866 BT31 1258 3054
Braganza Mining Co. Ltd Braithwaite Cumberland 1882 BT31 3042 17259
Braithwaite Mines Ltd Braithwaite Cumberland 1916 BT31 23221 143433
Braithwaite Mining Co. Ltd Braithwaite Cumberland 1887 BT31 3853 24280
Brandley Mining Co. Ltd Braithwaite Cumberland 1883 BT31 3248 19068
Brandley Mining Co. Ltd Braithwaite Cumberland 1891 BT31 5048 33897
Brandon Walls Consolidated Mining Co. Ltd Stanhope Durham 1856 BT41 75 416
Brandon Walls Lead Mining Co. Ltd Stanhope Durham 1862 BT31 681 2906
Brassington Manganese Umber Ganister & Lead Mines Ltd Brassington Derbyshire 1885 BT31 3477 21080
Bratsberg Copper Co. Ltd Norway 1886 BT31 3674 22789
Bratsberg Copper Co. Ltd Norway 1888 BT31 4046 25830
Bratsberg Copper Co. Ltd Norway 1881 BT31 2783 15197
Bratsberg Mining Co. Ltd Norway 1866 BT31 1227 2853C
Bratsberg Smelting & Refining Co. Ltd Norway 1889 BT31 4366 28357
Bravo Mine Syndicate Ltd 1887 BT31 3831 24074
Brazilian Consols Mining Co. Ltd Brazil 1873 BT31 1807 6939
Brazilian Land & Mining Co. Ltd Brazil BT41 75 419
Brazilian Mines Syndicate Ltd Brazil 1895 BT31 6504 45779
Brazilian Mining Syndicate Ltd Brazil 1910 BT31 19722 112636
Brea Consolidated Tin & Copper Mining Co Towednack Cornwall BT41 75 420
Brea Consolidated Tin & Copper Mining Co. Ltd Towednack Cornwall 1858 BT31 347 1257
Breage Tin Mine Ltd Breage Cornwall 1892 BT31 5375 36934
Breage United Tin Mines Co. Ltd Breage Cornwall 1882 BT31 2918 16255
Bream Iron Mining Co. Ltd Bream Gloucestershire BT41 75 422
Bream Iron Mining Co. Ltd Bream Gloucestershire 1857 BT31 254 840
Bremer Mining Co. Ltd South Australia Australia 1872 BT31 1682 5989
Brescia Mining & Metallurgical Co. Ltd 1892-1935 BT2 2334
Brescia Mining & Metallurgical Co. Ltd nd BT2 3381
Briggs & Allanson-Winn Ltd 1925 BT31 29119 206696
Briggs & Co. Ltd 1892 BT31 5357 36759
Briggs & Company 1856 BT31 201 609
Briggs & Palmer Ltd 1920 BT31 25460 162843
Briggs Brothers & Co. Ltd 1882 BT31 3072 17522
Briggs, Jones, & Gibson Ltd 1900 BT31 16377 65603
Briseis, Tin & General Mining Co (1930) Ltd 1930 BT31 30619 247686
Britain United Mining Co. Ltd St Agnes Cornwall 1875 BT286 401
Britannia Copper Mine Ltd 1898 BT31 15949 56729
Britannia Iron Mining & “Spiegel Eisen” Co. Ltd 1872 BT31 1744 6457
Britannia Mining Co. Ltd 1934 BT31 33551 293479
Britannic Refractories Co. Ltd 1926 BT31 35381 215859
British & Australian Mining Co BT41 86 478
British & Colonial Smelting & Reduction Co. BT41 87 491
British & Colorado Smelting Works Co. Ltd 1872 BT31 1771 6654
British & Continental Mining Syndicate Ltd 1934 BT31 41444 290296
British & Foreign Mining Financial Association Ltd 1864 BT31 1021 1662C
British & Foreign Smelting Co. Ltd BT41 94 529
British & Foreign Smelting Co. Ltd Old Bow Middlesex 1858 BT31 335 1197
British & General Radium Corporation Ltd South Terras Cornwall 1928 BT31 32899 227718
British (Non-Ferrous) Mining Corporation Ltd Hemerdon Devon 1927 BT31 35876 219774
British American Co-operative Mining Association Ltd 1882 BT31 2933 16370
British Arsenic Mines Ltd Devon 1896 BT31 6892 48478
British Australian Mines Agency Ltd 1895 BT31 6500 45758
British Barytes Co. Ltd MN 1872 BT31 1754 6542
British Broken Hill Proprietary Co. Ltd New South Wales Australia 1887 BT31 14892 25306
British Burmah Lead Co. Ltd Burma 1886 BT31 3587 22032
British Caucasus Mining & Trading Co. Ltd 1921 BT31 26468 173315
British Colonial & Foreign Mines Investment Trust Ltd 1888 BT31 4156 26840
British Columbia Merchandize Trading & Prospecting Co. Ltd British Columbia 1897 BT31 7535 53676
British Columbia Smelting Co. Ltd British Columbia 1888 BT31 4145 26744
British Coolgardie Prospecting Syndicate Ltd Australia 1894 BT31 5828 40895
British Copper Co. Ltd Lochfine Scotland and Shropshire 1864 BT31 884 939C
British Copper Syndicate Ltd 1905 BT31 11297 86418
British Guiana & General Prospecting Syndicate Ltd 1905 BT31 11105 84587
British Guiana Prospecting & General Developing Co. Ltd 1895 BT31 6179 43764
British Isles Mineral Syndicate Ltd Ireland 1912 BT31 20679 122111
British Klondyke Mines & Finance Co. Ltd 1897 BT31 7561 53891
British Malayan Tin Syndicate Ltd Carnkie Cornwall 1924 BT31 36930 199537
British Manganese Co. Ltd Rhiw Caernarvonshire 1903 BT31 17069 78032
British Manganese Co. Ltd 1907 BT31 18072 93062
British Manganese Co. Ltd Devon 1882 BT31 2969 16668
British Manganese Mining Co. Ltd Devon BT41 99 555
British Manganese Mining Co. Ltd Devon 1859 BT31 389 1458
British Metal & Mining Corporation of Scandinavia Ltd 1913 BT31 14139 130239
British Metalliferous Mines Ltd 1905 BT31 11259 86044
British Mexican Exploration Syndicate Ltd Mexico 1890 BT31 4698 30948
British Mines Ltd Cornwall 1903 BT31 10142 76026
British Mining & Milling Co. Ltd 1874 BT31 2017 8721
British Mining & Smelting Co. Ltd Devon 1865 BT286 89
British North Rand Mines Ltd 1895 BT31 6206 43991
British Ontario Mining Co. Ltd 1923 BT31 28046 191882
British Prospecting & Mining Syndicate Ltd 1911 BT31 13489 113551
British Prospecting Co. Ltd 1894 BT31 5917 41618
British Radium Corporation Ltd St Ives Cornwall 1908 BT31 18664 100888
British Radium Production Trust Ltd Cornwall 1929 BT31 30511 240106
British Refractories Research Association 1920 BT31 35245 166402
British Refractory Materials Ltd 1914 BT31 22472 137293
British Sheba Consolidated Mining Co. Ltd Cornwall 1895 BT31 6458 45509
British Silver Lead Mining Co. Ltd Ffestiniog Merionethshire 1881 BT31 2813 15412
British Smelting & Refining Co. Ltd 1919 BT31 25299 161223
British Smelting Association BT41 103 580
British Sulphides Smelting Co. Ltd 1899 BT31 31698 61911
British Sulphur Company Ltd Ireland 1912 BT31 20847 123578
British Tin & Copper Mining Roche Cornwall 1862 BT31 630 2636
British Tin Co. Ltd Cornwall 1904 BT31 10859 82411
British Tin Corporation Ltd Cornwall 1912 BT31 32143 125706
British Tin Smelting Co. Ltd 1937 BT31 41470 329330
British Tintic Mining Co. Ltd 1877 BT31 2383 11837
British Transvaal Mines Ltd 1899 BT31 8772 64240
British Union Copper Co. Ltd Flintshire 1882 BT31 2930 16343
British Westralian Mines & Share Corporation Ltd 1895 BT31 6473 45603
British-Siberian Mining Co. Ltd 1906 BT31 11766 91240
Brittany Mines Co. Ltd 1872 BT31 1723 6300
Brittany Silver Lead Mining Co. Ltd France 1863 BT31 777 418C
Brixham Hematite Iron Mining Co. Ltd Brixham Devon 1865 BT286 85
Brixham Mines Syndicate Ltd Brixham Devon 1891 BT31 5073 34113
Broadwood Mines Syndicate Ltd Durham 1882 BT31 2970 16670
Broken Hill Proprietary Co. Ltd New South Wales Australia 1887 BT31 14892 25306
Broken Hill Silver Mines Ltd New South Wales Australia 1887 BT31 3969 25187
Broken Hill Sulphide Smelting Co. Ltd New South Wales Australia 1896 BT31 6857 48231
Bromlow Mining Co. Ltd Bromlow Shropshire 1861 BT31 599 2501
Bromlow Mining Co. Ltd Bromlow Shropshire 1863 BT31 809 575C
Bron Heulog Lead Mining Co. Ltd Llanfair Talhaiarn Denbighshire 1869 BT31 1500 4659
Bron y Manod Mining Co. Ltd Merionethshire 1864 BT31 940 1223C
Bronfloyd Co. Ltd Penrhyncoch Cardiganshire 1870 BT31 1544 4933
Bronfloyd Co. Ltd Penrhyncoch Cardiganshire 1874 BT31 2005 8635
Bronfloyd Mining Co. Ltd Penrhyncoch Cardiganshire 1856 BT31 50 204
Bronfloyd Mining Co. Ltd Penrhyncoch Cardiganshire BT41 107 608
Bronfloyd United Co. Ltd Penrhyncoch Cardiganshire 1861 BT31 561 2292
Broomassie Mines Ltd 1901 BT31 9387 69724
Broomassie Mines Ltd 1901 BT31 9454 70215
Brough with Hilbeck Mining Co. Ltd Brough Westmorland 1883 BT31 3150 18215
Browhead Copper Mines Ltd Ireland 1906 BT31 11573 89313
Broxburn Shale Oil Co. Ltd Livingston Scotland 1862-1866 BT2 102
Bruce Copper Mines Ltd 1905 BT31 11355 86983
Bruce Copper Mines Ltd 1900 BT31 9009 66645
Bruce Land & Mining Co. Ltd 1878 BT31 2447 12439
Brundholme Mining Syndicate Ltd Keswick Cumberland 1907 BT31 12118 94923
Brymbo Lead & Spelter Co. Ltd Brymbo Denbighshire 1858 BT31 380 1402
Brymbo Lead Co. Ltd Brymbo Denbighshire 1883 BT31 3154 18250
Brymbo Lead Smelting & Desilverising Co. Ltd Brymbo Denbighshire 1863 BT31 794 497C
Bryn Alyn Lead Mining Co. Ltd Llanarmon Denbighshire 1875 BT31 2138 9842
Bryn Dyfi Lead Mining Co. Ltd Glandovey Cardiganshire 1881 BT31 2855 15724
Bryn glas Silver Lead Mining Co Ponterwyd Cardiganshire 1856 BT41 108 613
Bryn Glas Silver Lead Mining Co. Ltd Llanbadarnfawr Cardiganshire 1879 BT31 2563 13375
Bryn Gwiog Mines Ltd Halkyn Flintshire 1906 BT31 31955 91028
Bryn Gwyn Lead Mining Co. Ltd Mold Flintshire 1864 BT31 1005 1578C
Bryn Hope Lead Mining Co. Ltd Pontrhydfendigaid Cardiganshire 1861 BT31 595 2480
Bryn Llygwy Lead Mining Co. Ltd Trefriw Caernarvonshire 1870 BT31 1549 4966
Bryn Royalton Consols Mining Co. Ltd Roche Cornwall 1869 BT286 182
Bryn yr Afr Mining Co. Ltd Goginan Cardiganshire 1879 BT31 2511 12968
Bryn ystwith Lead Mining Co. Ltd Pontrhydygroes Cardiganshire 1868 BT31 1419 4115
Brynambor Lead Mining Co. Ltd Llanddewi Brefi Cardiganshire 1870 BT31 1552 4991
Brynambor Lead Mining Co. Ltd Llanddewi Brefi Cardiganshire 1862 BT31 627 2629
Brynantllech Copper Mining Co. Ltd Wales 1864 BT31 998 1544C
Brynarian Lead & Copper Mining Co. Ltd Taliesin Cardiganshire 1860 BT31 481 1881
Brynarian Lead & Copper Mining Co. Ltd Taliesin Cardiganshire BT41 108 612
Brynbedwen Lead Mining Co. Ltd Brynbedwen Montgomeryshire 1879 BT31 2491 12809
Bryneini Lead Mining Co. Ltd Darowen Montgomeryshire 1875 BT31 2132 9775
Brynfelin Mining Co. Ltd Beddgelert Caernarvonshire 1861 BT31 550 2230
Brynford & Pen-y-Pylle Mining Co. Ltd Brynford Flintshire 1900 BT31 9238 68568
Brynford Mining Co. Ltd Brynford Flintshire 1905 BT31 17563 85952
Brynpostig Mine Ltd Llanidloes Montgomeryshire 1863 BT31 871 877C
Budnick Consols Tin Mining Co. Ltd Perranzabuloe Cornwall 1871 BT286 231
Buena Tierra Mining Co. Ltd 1912 BT31 35048 120177
Buena Vista Copper Mines Ltd 1899 BT31 8550 62252
Buffels Land & Mining Co. Ltd 1889-1902 BT2 1897
Builth Lead Mining Co. Ltd Breconshire 1886 BT31 3778 23590
Buller & Basset Tin & Copper Co. Ltd Redruth Cornwall 1887 BT31 4003 25471
Bullfinch (Westralia) Prospecting Syndicate Ltd 1910 BT31 13431 112536
Bullion Mining Co. Ltd Idaho U.S.A. 1884 BT31 3302 19503
Bultfontein Mining Co. Ltd 1880 BT31 2662 14164
Bultfontein Sun Diamond Mine Ltd 1895 BT31 6451 45469
Bulthy Mine Lead & Barytes Works Co. Ltd Middletown Shropshire 1883 BT31 3112 17869
Bunney Wolfram & Tin Mine Syndicate Ltd Bugle Cornwall 1899 BT31 8574 62437
Burbanks Mining & Investment Trust Ltd 1923 BT31 32582 190784
Burguillos Spanish Iron & General Mining Co. Ltd 1912 BT31 20579 121236
Burhill Mining Co. Ltd Appletreewick Yorkshire 1862 BT31 662 2797
Burlington Mine Ltd 1897 BT31 7667 54727
Burma Copper Mines Ltd Burma 1903 BT31 10475 79031
Burma Lead Mines Ltd Burma 1903 BT31 10476 79036
Burma Mines Consolidated Ltd Burma 1903 BT31 10476 79038
Burma Mines Development & Agency Ltd Burma 1903 BT31 10476 79039
Burma Mines Ltd Burma 1903 BT31 10476 79040
Burma Mining Corporation Ltd Burma 1928 BT31 30237 231017
Burma Silver Mines Ltd Burma 1903 BT31 10477 79043
Burma Tin Mines Ltd Burma 1903 BT31 10477 79044
Burma Wolfram & Tin Mining Co. Ltd Burma 1913 BT31 21648 130537
Burma Zinc Mines Ltd Burma 1903 BT31 10477 79045
Burmah Prospecting Syndicate Ltd Burma 1904 BT31 17319 82401
Burnhope Lead Mining Co. Ltd Edmondbyers Durham 1884 BT31 3382 20216
Burntisland Oil Co. Ltd Burntisland Fifeshire 1881-1894 BT2 1049A
Burra Burra Copper & Tin Mine Co. Ltd Kenwyn Cornwall 1872 BT286 289
Burren Lead & Calamine Co Co. Clare Ireland 1862 BT31 635 2665
Burrow & Butson Mining Co. Ltd St Agnes Cornwall 1872 BT286 284
Burry Port Smelting Co. Ltd 1864 BT31 881 921C
Burtersett Quarries Co. Ltd Hawes Yorkshire 1907 BT31 12068 94385
Buster Mines Syndicate Ltd 1892 BT31 5298 36215
Butters Salvador Mines Ltd 1899 BT31 8669 63247
Butters Tor & General Mining Syndicate Ltd Bodmin Cornwall 1905 BT31 17617 86723
Bwadrain Consols Silver Lead Mining Co. Ltd Rheidol Valley Cardiganshire 1867 BT31 1342 3567
Bwana M’Kubwa Copper Mining Co. Ltd 1910 BT31 19306 108183
Bwlch Consols Silver Lead Mining Co. Ltd Goginan Cardiganshire 1867 BT31 1348 3622
Bwlch Creolan Silver Lead Mine Ltd Llanrhaiadr Montgomeryshire 1881 BT31 2875 15892
Bwlch United Mines Ltd Goginan Cardiganshire 1876 BT31 2249 10721
Bwlch y Plwm Lead Mining Co Llanfrothen Merionethshire 1863 BT31 807 565C
Bwlchglas Mining Co. Ltd Tal-y-bont Cardiganshire 1890 BT31 4847 32146
Bwlchglas Prospecting Syndicate Ltd Tal-y-bont Cardiganshire 1889 BT31 4530 29637

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