 The partnership of five also invested in the Duke of Argyll's mines in Morvern and Mull, Grant and Burroughs buying (at a premium) in April 1730 the lease granted to Sir Alexander Murray in 1727.The Morvern mines were in fact at Glendow.They took mines on Kinlochalin and on the estate of MacLean of Kingairloch, also mines at Aar and Sandhall in Norway.