Complex sentence: It was amongst the largest and most sophisticated public tramway systems in the world Page 79, Godden Mackay Logan "Former Rozelle Tram Depot-Conservation Management Plan", September 2004 and was a major place of employment during its period, employing up to 650 staff.
Split into simpler sentences: It was amongst the largest and most sophisticated public tramway systems in the world Page 79, Godden Mackay Logan "Former Rozelle Tram Depot-Conservation Management Plan", September 2004. During its peak of operations the depot was a major place of employment, employing up to 650 staff.