Before '2 holes just before firing - note officer going to tent to fire charge, by 10-cell Leclanche Battery on the sledge close by. Other men busy pulling G.C. [gun cotton] to next hole. Castle Rock beyond.' Photograph taken at long range, showing preparations for blasting ice, in order to clear an exit route for the Discovery. A further annotation on this photograph states that it is 'companion to 54' (MS 3755/2/35). January - February 1904