Complex sentence: The company was severely affected by the 2007 Sheffield floods, when the nearby River Don flooded the works with several feet of water, but after a clean up effort Forgemasters was back in action within weeks of the devastation.
Split into simpler sentences: The company was severely affected by the 2007 Sheffield floods, when the nearby River Don flooded the works with several feet of water. But, after a clean up effort, Forgemasters back in action, within weeks of the devastation.