The Keith Richards of concrete floors

"This whole project was correction of construction errors, as the building was originally a laundromat, had probably half a dozen cold joints, plumbing trenches, and holes and was a generally haggard 50-some-year old slab. It was the Keith Richards of concrete floors. The worst part was a combination of slabs in the floor with about a 2" ridge. More on that later: let's start at the front door."
(May 5, 2011, Concrete Times)