| Description | Including copies of extracts from Cromford Canal Act 29 George III [1789], notes on area of coal left for support and Butterley Park Pump, section of Butterley Park Pumping Shaft, plans of proposed pillar to protect Cromford Canal, report on Butterley Park Canal Tunnel, Feb 1907, copy of award between William George Cursham and the Midland Railway Company, 1880, and plans (5, numbered in envelopes) of HEM [Mitton], Dec 1919 |