SANTA FE, N.M., Aug. 3, 2011 /PRNewswire/ -- Sigma Labs, Inc. (OTCBB: SGLB.OB). Sigma Labs, Inc. announced today that it received a contract from Alcoa, Inc. (NYSE: AA) to demonstrate the feasibility of applying Sigma Labs' In-Process Quality Assurance (IPQA) technology to the...
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