Richard Ford and Company made use of by-products from the manufacturing process. Obsidian-like slag was sold to glass blowers in the Borders and bark peeled from coppiced wood was exported to tanneries on the Clyde and North Lancashire.

Images:

1. Slag (2023)
   
2. Slag close up (2022)
   
3. Charcoal collage (2023)
   
4. Slag heap at Bonawe Iron Works covered in foliage (2022)