The 185th Tunnelling Company started work on the "Lochnagar" mine on 11 November 1915 and on 4 February, eighteen members of the 185th Tunnelling Company were killed in a German camouflet explosion at La Boisselle.
The 185th Tunnelling Company started work on the "Lochnagar" mine on 11 November 1915. February, eighteen members of the 185th Tunnelling Company were killed in a German camouflet explosion at La Boisselle. This was on 4.