Is a clean room really needed for data recovery?

Don Anderson had an interest in I.T. back when he was a teen reading PC World magazines in the early 90's, until he was finally old enough to work as a computer repair tech. Graduating from college he worked many contract positions throughout his twenties including IBM, SAP and Dell. He now has control of several companies and is a renowned expert in the field of Data Recovery and Digital Forensics. Not to mention an animal lover.