Complex sentence: After 60010 was condemned and her chimney removed for either 60024 "Kingfisher" or 60004 "William Whitelaw", both in the works at that time, she was placed behind Darlington motive power depot and forgotten about.
Split into simpler sentences: After 60010 was condemned, and her chimney removed for either 60024 "Kingfisher" or 60004 "William Whitelaw", both in the works at that time. She was placed behind Darlington motive power depot and forgotten about.