Complex sentence: She hauled her first Service Train since the 1970s on the 7th July 2007 after 6 years of restoration, steaming and then all of the numerous tests and modifications.
Split into simpler sentences: She hauled her first Service Train since the 1970s. This happened on the 7th July 2007 after 6 years of restoration, steaming and then all of the numerous tests and modifications.