Butterley Company correspondence file on the proposed lease of minerals under land at Eastwood by the Walker Trustees Including the proposal to make the lease on similar terms to the Plumptre lease of 30 Dec 1938. Also including, at top, copy of report on potential dangers of water accumulation to the company's collieries, occasioned by the closure of Pentrich Colliery, and the effect on output by the employment of Pentrich men at Denby Hall No. 7 Panel and Britain Colliery Dec 1938-Oct 1942