Around midnight on 11 March 1864 the wall of Dale Dyke dam collapsed, sending a torrent of water down the Loxley valley, through Malin Bridge and Hillsborough. The water travelled along the Don through to Wicker and on towards Rotherham. Many homes and business were destroyed and the water killed at least 240 people. It was the worst civilian disaster of the time and became known as the Great Sheffield Flood.
This photograph shows a view of Wisewood Rolling Mill, damaged by the flood.
After the flood, people claimed for rebuilding and restoring the Wisewood Works. You can see the claim here.
Messrs W. J. How & Co. also claimed for their personal property. You can see their claim here.