These two functions, corn milling and tuck milling, were sometimes combined under one roof or within one complex, serving quite different purposes. A corn mill ground cereal grain into flour or meal, while a tuck mill, also known as a fulling mill, processed woven woollen cloth by pounding it with heavy wooden hammers to clean and thicken the fibres. Finding both operations together in a single location speaks to the practical economy of water-powered sites, where a reliable millrace could be put to more than one use.

Beyond its classification as a combined milling site in Carrowmoremoy, the detailed history of this particular structure has not yet been fully documented in the public record. What can be said with confidence is that mills of this type were a fixture of rural Mayo life from the medieval period onward, and their presence in a townland often shaped patterns of settlement and trade for generations. The tuck mill function, in particular, points to a local weaving tradition, since fulling was only necessary where cloth was being produced in sufficient quantities to justify the infrastructure. The pairing of the two suggests a community engaged in both tillage and textile work, relying on the same watercourse to process the products of both.