Rhondda Mining disasters Mining disasters in the Rhondda Valley 1850 - 1965

| Colliery | Location_ | Date_ | Year_ | Death_toll | cause |
|---|---|---|---|---|---|
| Maerdy Colliery | Maerdy | 23–24 December | 1885 | 81 | gas explosion |
| National Colliery | Wattstown | 18 February | 1887 | 39 | gas explosion |
| Tylorstown Colliery | Tylorstown | 27 January | 1896 | 57 | gas explosion |
| National Colliery | Wattstown | 11 July | 1905 | 120 | gas explosion |
| Cambrian Colliery No.1 | Clydach Vale | 10 March | 1905 | 34 | gas explosion |
| Naval Colliery | Penygraig | 27 August | 1909 | 6 | cage fall |
| Glamorgan Colliery | Llwynypia | 25 January | 1932 | 11 | firedamp |
| Blaenclydach Colliery | Clydach Vale | 25 November | 1941 | 7 | runaway trolly |
| Lewis Merthyr Colliery | Trehafod | 22 November | 1956 | 9 | gas explosion |
| Cambrian Colliery | Clydach Vale | 17 May | 1965 | 31 | gas explosion |