Memorandum of agreement between Henry Brasier Mitchell, agent for Lady Neave, and William Arthur Hills of Queensferry, co. Flint, chemical manufacturer; latter given liberty for two years to mine for copper, lead, and other ores, in the Llanlliana district (farms of Llanlliana, Bryn Llywelyn, Tydu); and including Dinas Hill; annual rent, £5, and one-eighteenth part of the produce clear of all expenses; further provisions if this take-note be superseded by a lease. 31 March 1889