Coal prices went down...
View the book online here
Formats - eg on line or pdf
Read the book on line here https://archive.org/stream/cu31924030117471#page/n0/mode/2up
And from Henry Heavisides - The Annals of Stockton
Relating to Thomas Hackworth - John Wesley Hackworth's brother who took over at Shildon and set up as part of the Clarence line. -