Butterley Company correspondence file on a legal case with men working the Hard Coal seam at Denby Hall Colliery The case brought against the Butterley Company was based on the men not getting paid for working the Soft Coal, even though they were told to work it in the same way as the Hard Coal. Includes the admission of facts given about the lawsuit in an Alfreton court, dated 4 Mar 1912. Oct 1911-Mar 1912