I came across a new blog recently by Dr. Ron Lasky of Indium Corporation, named simply Dr. Lasky's Blog. While his expertise and background is in the electronics and electronic materials area, he also has an interest in Theory of Constraints.
He has been writing a story-by-installment of a manufacturing facility that starts with an entry from a week or two ago, Beyond the Theory of Constraints, with several entries since then.
The focus of the stories so far is what I call "what good looks like." What do you expect to see in a well-running system? And then go out there and look: what do you really see.