 PRINCETON JUNCTION, N.J., July 28, 2021 GLOBE NEWSWIRE -- MISTRAS Group, Inc. NYSE:MG has scheduled a conference call for Tuesday, August 3, 2021 at 9:00 am Eastern Time to discuss its results for the second quarter of 2021. A press release with the second quarter results will be issued after the close of market on Monday, August 2, 2021. 