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After receiving raw material from our vendor, it stays in inventory for around 1 day before any processing starts on this raw material. Is this inventory of raw material a part of non-value added time? Great Question! Unless the raw material demands the waiting before it can be used, the answer is no. But based…
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Tracy O'Rourke

Tracy is a Master Black Belt at, the co-author of The Problem-Solver’s Toolkit and co-host of the Just-in-Time Cafe. She is also a Lean Six Sigma Green Belt Instructor at UC San Diego and teaches in San Diego State University’s Lean Enterprise Program. For almost 20 years, she has helped leading organizations like Washington State, Charles Schwab and GE build problem-solving muscles.