1. The use of the engine house for habitation and a request to pitch a tent in the tank enclosure. [Mr Rhodes and Mr Lees had difficulty in finding accommodation during the holiday season];
2. Proposed alterations and improvements to the Conway Mussel Purification Tanks; in particular, problems re the terms of the lease, and covenants entered into when the land was sold by the former owners of the Benarth Estate for the purpose of the mussel tanks;
3. Miscellaneous pieces of correspondence: [memo] from Dr Dodgson on precautions to prevent the introduction of slipper limpets [? pests] into the area; Memo from Dr A T Masterton re experiments at Conwy in the use of chlorine to assist in mussel purification; J Jones that he and his brother were observed collecting mussels too early, in contravention of the regulations, and that the mussels would have to be disposed of; Re proposed alterations to the engine house; Correspondence re a patent application by Dr A T Masterton for a new and improved method and means for purifying edible shellfish with special reference to mussels and oysters. Until [late 1919, early 1920] ATM worked for the Ministry and his patent application raised various concerns with the Conwy staff that if approved, ATM might claim a monopoly in the use of chlorine for shellfish cleansing and thereby a claim to receive royalties. Correspondence ranges from opinion as to the actual working and commercial viability of the specification and arguments put forward to challenge the application, to legal opinions on the application and the viability of any possible challenge. The conclusion reached in a confidential minute sheet is that the Ministry was unlikely to oppose the application, being of the opinion that there were other legal means available to them in the event that the granting of the patent was to cause problems.