Letter from James McCrone (acting for the Duke of Atholl) to the Duke concerning legal disputes over mining operations on the Isle of Man. Discusses actions raised against mine tenants by downstream proprietors (including a Paper Mill owner) over water pollution from ore-washing, and requests the Duke's direction on obtaining legal counsel opinion. Dated 1827, well after the 1765 Revestment, but illustrates ongoing management of ducal property and legal disputes on the island.