Mansfield Colliery accident report book, for "Hazel" seam workers and surface workers With columns for date, hour of accident, hour of shift, name of employee, age, occupation, place of accident, nature of injury, time off work, cause of accident and address. Pages 1-160, for "Hazel"workers, Dec 1937-Jun 1951 Pages 161-197, for surface workers, Jan 1938-Dec 1958. Dec 1937-Dec 1958