That distinction, vertical-wheeled, matters more than it might first appear. Ireland has a long tradition of horizontal-wheeled mills, sometimes called Norse or tub mills, in which a simple paddle wheel sits flat in the current and drives a millstone directly above it. The vertical-wheeled type is a more mechanically complex arrangement, with a large wheel turning on a horizontal axle, its motion converted through gearing to drive the millstones. Both forms were once commonplace features of the rural landscape, tucked beside streams and rivers wherever grain needed grinding, but relatively few of either type survive in any recognisable form today.

The presence of such a mill in Leitrim More points to the kind of small-scale agricultural economy that shaped townlands across Connacht for centuries. Milling was rarely a solitary enterprise; a working mill implied a community large enough to produce surplus grain, a watercourse reliable enough to power it, and sufficient local investment to build and maintain the machinery. Vertical-wheeled mills, being more technically demanding than their horizontal counterparts, were often associated with periods of improving landlordism or with estate-era infrastructure, though without more specific documentary evidence attached to this particular site, the precise date and circumstances of its construction remain unclear.