Kayser Ellison -Darnall Works?

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Hello

I am stiill trying to work out the name of a Steel works that was built in Darnall ,next to the old sandersons crucible works,sometime between 1905 and 1921?It was bounded to the south by Shirland road,

to the north by Darnall road and to the east by Wilfrid road.There is a map of the works posted in an earlier post!!!I think it may have been an extension of the Kayser Ellison works whose main site were located on Carlisle street?

Thanks for any help on when the works were built in Darnall?

Thanks

Ron