Complex sentence: The majority of the huge structures of'A' and'B' Stations were razed by 28 June 1987, but the large switch house dating from 1926 remained in place until its levelling in March 1994.
Split into simpler sentences: The majority of the huge structures of'A' and'B' Stations were razed by 28 June 1987. The large switch house dating from 1926 remained in place until its levelling in March 1994.