I remember the Butterley engineering works very well, I lived in the grounds where the memorial to William Jessop is, he was one of the co. founders of the company, found a nice Butterley company mug in the kitchen area of the Monument Hall which is adjacent to the memorial tower when I lived there from 1969 to 1979, Dad was the Game keeper for Bernard Swain who bought the estate from the Butterley Co.
Dalesman