Butterley Company correspondence file on barriers and land exchange between Newstead Colliery Company, Butterley Company and New Hucknall Colliery Company between Newstead and Kirkby-in-Ashfield, with mention of pumping stations at Noman's Wood. Copy of terms of agreement for barriers between the Duke of Portland, Ecclesiastical Commissioners, Newstead Abbey Estate, Butterley Company, New Hucknall Company and Newstead Colliery Company. Plan referred to in terms, early 20th cent, scale 6 inches to 1 mile, 29cm x 39cm. Jul 1925-Mar 1929