at the 'Gorky' drift mine, with ninety men and boys taking the spake, an open-sided trolley fitted with cross planks for seating and a central overhead handrail as a holding point, down to the workings 525 yards below. The surface engineman suffered a temporary blackout and the manual brake was disengaged, causing the spake to quickly build up speed. Most of the injuries and fatalities were to miners who leapt from the spake and were thrown back under the trolley due to the narrowness of the drift shaft. On 17 May 1965, a third major accident occurred at the Cambrian Colliery. An explosion caused by firedamp, after poor ventilation allowed a build-up of flammable gas, killed 31 miners. The ignition point was later identified as an electric arc on an open switch-panel which was being worked on. This was the last major mining disaster in South Wales history. 1910 flood disaster At about 4.00 p.m. on Friday 11 March 1910, the lives of one adult and five children were lost when pent-up water from an abandoned coal mine burst through into the village. The mountainside seemed to give way, 'as though from a volcanic eruption' and a torrent of water together with huge amounts of earth, boulders and other debris swept down the hillside. Directly in the path of this torrent lay Adams Terrace and, according to contemporary newspaper reports, the first house it encountered 'was in a moment completely wrecked like a pack of cards' and its occupants Mrs. Elizabeth Ann Williams and her ten-week-old baby girl perished. A three-week-old baby boy also died. The newspaper went on to state that, 'Altogether eleven houses and a shoemaker's shop were wrecked, one being completely washed away'. Rushing down to the valley floor, the torrent inundated the Clydach Vale School and trapped hundreds of children. The time coincided with the homecoming of many miners at the ending of a shift and an immediate rescue effort by them and the school's staff saved all but three of over 950 children. In particular, headmaster Robert Ralph Williams displayed extraordinary bravery in battling the flood and saving many children, for which he was later awarded the Albert Medal. A brass wall plaque was placed in the school in recognition of the discipline and heroism of the staff in organising the rescue. In preparation for the 2010 centenary of the disaster, another plaque, with names