Dear Mike, Thankyou for your Post. There was a run of ten locks, but this was on the Cheshire extension over Trafford Moss to Runcorn - the locks being near the latter place apparently - the Duke wanted an outlet for his coal to the Mersey/Liverpool independent of the Mersey & Irwell Canal. Please don't think I am trying to be knowledgeable... it's from notes while reading the book! Regards, Bernard