sentences:  Once the second shaft was finished, digging also commenced from there, though this had been abandoned by May 1860 according to a report which stated that had been dug by this time, approximately two-thirds of the full length.Work was expected to be finished by December 1860/January 1861.As it stood, the tunnel was only 'finished' in March 1861 although, at the time, it was exposed rock without a brick lining and required further work to complete it.