Roman coal workings, Haydon (Haydon) - Source of Reference
The information on this website is based on a range of published and unpublished works. Below is a list of the source of information used in writing this record.
1) Ordnance Survey Map of Hadrian's Wall 1964
2) Richmond, I A, ed 1957. Handbook to the Roman Wall, 11th edition (Newcastle upon Tyne)
3) Field Investigators Comments F1 RL 05-JAN-1966