Alluvial, later shaft. Situated near Bosworlas hamlet in the upper Cot valley, lacks any visible remains today, aside from shallow spoil heaps covered by grass in the marshy vicinity along the brook. It’s speculated that the mine might have initially begun as an alluvial operation, but shafts were later dug, likely to reach a lode beneath the alluvial deposits. However, there are no recorded outputs from this mine.