Slate Dressing Mill (Australia Mill)

The Slate Dressing Mill, also known as Australia Mill, is a Grade II listed building constructed from regularly coursed rubblestone and slate slabs. It features a gable-ended slate roof, although the slates were stripped off at the time of the survey. The mill has a very long rectangular plan with two gabled projections on the northeastern long wall. The corresponding southwestern side has a full-length, very shallow-pitched lean-to that includes pedestrian doorways at regular intervals, but no windows. The main entrance, which carries a railway track, is located at the northwestern end and has a louvred window at the apex of the gable.

The main building is supported by a multi-trussed cast-iron tie beam and raking strut structure, with massive iron girders that hold up the three-purlin roof structure in the lean-to. The main building retains its 36 saw tables, which are virtually intact and carry Ingersoll Rand plates that appear to be of Turner pattern, with a railway track running alongside. The long southwestern wall has regularly spaced open doorways that provide access to the lean-to and its slate slab bins.