Specification for a proposed railroad from Hafod to Portmadoc.
Record of slates (from many quarries) shipped from Portmadoc (1839-1859). Correspondence between Searell and Mc. Kellar [McKellar] (1843-1844).
Searell resigns and becomes manager at Cwmorthin (early in 1844).
Estimates for re-opening Hafod Quarry by Searell (1856) and Wyatt of Penrhyn (1860).