Thomas Joseph Evans
Fronfelen Castle, Barmouth
| 1880–1881 | agent Vale of Conway lead mine, Llanrhychwyn, Caernarfonshire | |
| 1884–1885 | agent Crown slate quarry, Dolgellau | |
| 1886–1895 | owner Gorlanfarchog lead mine, Capel Curig, Caernarfonshire | |
| 1887–1891 | agent Moel Mochowgryn for Daniel Smeadly | |
| 1887–1889 | agent Garthgell gold mine, Llanaber | |
| 1888–1892 | operator Garllwyn mine, Llanaber | |
| 1888 | agent Nantygroes mine, Ffestiniog | |
| 1888–1889 | agent Garllwyn mine, Llanaber | |
| 1889–1890 | agent Migeint slate Quarry, Trawsfynydd | |
| 1889–1890 | agent Moelfre | |
| 1889–1890 | agent Morfa iron mine, LLanaelhaern, Carenarfonshire | |
| 1890–1893 | agent Dolgoed gold mine, Llanfachreth | |
| 1891 | agent Clogau gold mine, Llanaber | |
| 1892–1894 | agent Ffridd Gwndwm gold mine, Llanelltyd | |
| 1893 | owner or operator and agent Migneint slate quarry, Trawsfynydd | |
| 1893–1894 | owner Crown slate quarry, Dolgellau | |
| 1893–1895 | agent Crown slate quarry, Dolgellau | |
| 1894 | agent Moel Llechowgryn for Allsop, Jones & Evans | |
| 1894 | operator and agent Moel Llechwedd Gwyn slate mine, Ffestiniog | |
| 1895 | agent Crown slate quarry, Dolgellau | |
| 1896–1900 | owner Camlan Mine, Dolgellau | |
| 1898–1899 | agent Hafod Uchaf gold mine, Llanaber | |
| 1898–1902 | agent Cae Mab Seifion gold mine, LLanelltyd | |
| 1900 | agent Eden gold mine, Trawsfynydd |
Crown grants with:
| Cadwalader Thomas | lease for minerals, Llanycil, 1868 | ||
| Henry Miles | leases (2) for slate, Llanllechid, Caernarfonshire, 1876, 1877 lease for gold, Llanelltyd, | ||
| Benjamin C Stephenson | lease for slate Llanfachreth, 1878 leases (2) for gold, Trawsfynydd, 1881 and LLangelynin, 1888 | ||
| Meredith Evans | lease for gold, Llanaber, 1888 leases (2) for minerals, Llanaelhaern, Caernarfonshire, 1890 and 1891 | ||
| Robert Griffith | lease for gold, Llanelltyd, 1892 | ||
| A A Corder | lease for slate, Dolgellau, 1893 | ||
| Elizabeth Jones | lease for slate, Ffestiniog, 1893 | ||
| William Sims Bull | leases (2) for slate, Ffestiniog, 1894 | ||
| John Edward Jones | lease for gold, LLanelltyd, 1895 | ||
| Ellis Pritchard | leases (3) for gold, Maentwrog and Trawsfynydd, 1895 | ||
| Thomas Hugh Roberts | lease for slate, Llanelltyd and Llannwywe, 1895 |
see also Allsop, Jones & Evans