Man operating lift cage, National Colliery, Porth. The middle-aged man has wavy hair and wears trousers, a shirt and a pullover. He places each hand on suspended handles at head height. In the foreground is iron work and a chain descending into a shaft. On the right is a board with chalked numbers. Dark interior of a mine building. Small dots (sunlit dust particles?) occupy the centre left of the image. Black and white image with a range of tones. Text on image, chalked on board, '15096 B 126212 B 291980 P [continued at length]'