NAR SH39NE2
Copper mine at Porth Llanlleiana, main buildings depicted intact on early eds. of OS County series (Anglesey II.4 1889; 1900); 3rd ed. (1924) shows buildings largely roofless, but sea-walls constructed.
(source: Rees 1975 (Ind. Arch. of Wales), 234)
associated with pond & leat to SE (Nprn400752).
RCAHMW AP94-CS 1210-11
RCAHMW AP945145/42-4
J.Wiles 29.06.04