« Reply #9 on: Thursday 13 May 21 19:45 BST (UK) »
I think the one you mean was part of a BBC series "Seven Wonders of the Industrial World." Hard to find on video, but it's also available as a book.
Adam, Allan, Anderson, Barrett, Berry, Blues, Booth, Brodie, Brough, Bruce, Bullions, Butchart, Caithness, Cameron, Cargill, Cochrane, Craig, Doig, Black, Falconer, Fotheringham, Gavine, Gray, Lilburn, Lynn, Martin, McBay, McDonald, McKechnie, Melville, Menzies, Moir, Mudie, Murray, Myles, Pike, Proudfoot, Roberts, Rollo, Roy, Rutherford, Sandiman, Scott, Stephen, Stewart, Taylor, Thornton, Whyte.