Contact sheets of Ystrad Quarry by John Chillingworth for INGOT picture story "Men at Work: The Limestone Quarry"

Four black and white contact sheets containing images taken by John Chillingworth to be considered for use in the December 1958 issue of INGOT magazine. Three sheets have the reference numbers 174/1, 174/3 and 174/4. The images comprise of various scenes at Ystrad Quarry including workers preparing and lowering explosives into drilled holes; workers assessing and surveying rock; heavy machinery at the quarry; large rocks with machinery in the background. Two of the images from these sheets appear in the picture story “Men at Work: The Limestone Quarry,” December 1958 issue, p. 33 and 36