Descendants of miners killed in a pit explosion in Barnsley are being urged to come forward ahead of a ceremony to relocate a memorial to the disaster.
The miners were killed in an underground explosion
Fifty-eight miners died underground after a coal dust explosion at Wharncliffe Woodmoor colliery in 1936.
A memorial wheel outside the site is being relocated because of repeated vandalism.
Barnsley Council wants relatives to get in touch to share memories of the disaster with school children.
Mayor Len Picken said: "I personally know of two women whose fathers were killed at Wharncliffe Woodmoor colliery and it would be tremendous to hear from them and other such people who were directly affected by this terrible disaster.
"Many of the miners who worked at Wharncliffe Woodmoor came from Royston, Carlton and Barnsley town centre and so it is from those communities in particular that we hope to find relations."
Families should contact the mayor at Barnsley Town Hall for further information.