colliery      location           date  year  death toll           cause
0           dinas colliery         dinas      1 january  1844          12   gas explosion
1          cymmer colliery        cymmer        15 july  1856         112   gas explosion
2        ferndale no 1 pit  blaenllechau     8 november  1867         178   gas explosion
3        ferndale no 1 pit  blaenllechau        10 june  1869          53   gas explosion
4          pentre colliery        pentre    24 february  1871          38   gas explosion
5        tynewydd colliery         porth       11 april  1877           5        flooding
6    dinas middle colliery         dinas     13 january  1879          63   gas explosion
7           naval colliery     penygraig    10 december  1880         101   gas explosion
8           gelli colliery         gelli      21 august  1883           5   gas explosion
9           naval colliery     penygraig     27 january  1884          14   gas explosion
10         maerdy colliery        maerdy  2324 december  1885          81   gas explosion
11       national colliery     wattstown    18 february  1887          39   gas explosion
12     tylorstown colliery    tylorstown     27 january  1896          57   gas explosion
13       national colliery     wattstown        11 july  1905         120   gas explosion
14   cambrian colliery no1  clydach vale       10 march  1905          34   gas explosion
15          naval colliery     penygraig      27 august  1909           6       cage fall
16      glamorgan colliery     llwynypia     25 january  1932          11        firedamp
17   blaenclydach colliery  clydach vale    25 november  1941           7  runaway trolly
18  lewis merthyr colliery      trehafod    22 november  1956           9   gas explosion
19       cambrian colliery  clydach vale         17 may  1965          31   gas explosion

Table as JSON:
{"colliery":{"0":"dinas colliery","1":"cymmer colliery","2":"ferndale no 1 pit","3":"ferndale no 1 pit","4":"pentre colliery","5":"tynewydd colliery","6":"dinas middle colliery","7":"naval colliery","8":"gelli colliery","9":"naval colliery","10":"maerdy colliery","11":"national colliery","12":"tylorstown colliery","13":"national colliery","14":"cambrian colliery no1","15":"naval colliery","16":"glamorgan colliery","17":"blaenclydach colliery","18":"lewis merthyr colliery","19":"cambrian colliery"},"location":{"0":"dinas","1":"cymmer","2":"blaenllechau","3":"blaenllechau","4":"pentre","5":"porth","6":"dinas","7":"penygraig","8":"gelli","9":"penygraig","10":"maerdy","11":"wattstown","12":"tylorstown","13":"wattstown","14":"clydach vale","15":"penygraig","16":"llwynypia","17":"clydach vale","18":"trehafod","19":"clydach vale"},"date":{"0":"1 january","1":"15 july","2":"8 november","3":"10 june","4":"24 february","5":"11 april","6":"13 january","7":"10 december","8":"21 august","9":"27 january","10":"2324 december","11":"18 february","12":"27 january","13":"11 july","14":"10 march","15":"27 august","16":"25 january","17":"25 november","18":"22 november","19":"17 may"},"year":{"0":1844,"1":1856,"2":1867,"3":1869,"4":1871,"5":1877,"6":1879,"7":1880,"8":1883,"9":1884,"10":1885,"11":1887,"12":1896,"13":1905,"14":1905,"15":1909,"16":1932,"17":1941,"18":1956,"19":1965},"death toll":{"0":12,"1":112,"2":178,"3":53,"4":38,"5":5,"6":63,"7":101,"8":5,"9":14,"10":81,"11":39,"12":57,"13":120,"14":34,"15":6,"16":11,"17":7,"18":9,"19":31},"cause":{"0":"gas explosion","1":"gas explosion","2":"gas explosion","3":"gas explosion","4":"gas explosion","5":"flooding","6":"gas explosion","7":"gas explosion","8":"gas explosion","9":"gas explosion","10":"gas explosion","11":"gas explosion","12":"gas explosion","13":"gas explosion","14":"gas explosion","15":"cage fall","16":"firedamp","17":"runaway trolly","18":"gas explosion","19":"gas explosion"}}