Complex sentence: At its peak the town's population reached 5000, however the town was removed in the early 1980s so that the rich underlying brown coal reserves could be used for the Yallourn W Power Station.
Split into simpler sentences: At its peak the town's population reached 5000. However, the town was removed in the early 1980s so that the rich underlying brown coal reserves could be used for the Yallourn W Power Station.