Remember Frederic Whitehurst:
FBI to review thousands of old cases for flawed evidence
When Whitehurst, a chemist with a doctoral degree from Duke, arrived at the FBI crime lab in 1986, the first thing he noticed was that the place was, as he called it, a pigsty. The equipment was outdated and there was a film of black soot coating the counters a dust from the vents that the agents called black rain.
http://usnews.nbcnews.com/frederic-whitehurst
Thanks for the link.