Stage II of the MAS was completed on 14 January 1979 when Wincobank signal box was closed. The boxes at Holmes, Masborough and Canklow closed in July 1979 followed on 16 May 1982 by Beighton Junction. Track work at Treeton was realigned and simplified and both boxes, Treeton Junction and Treeton South were closed in October 1982. At that point all Midland lines had been converted to MAS. The Sheffield to Lincoln line is however still operational using semaphore signals controlled by Woodhouse Junction signal box. The resignalling project was completed to encompass Chesterfield, Rotherham and lines north of Sheffield as far as Thurnscoe, Conisbrough, Darfield and Wath.