What is the Difference Between 2.2 and 3.1 MTC (Material Test Record)?

[@HardHatEngineer]

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[@pawecekalski1257]

Great, keep it up

[@HardHatEngineer]

Thanks. Keep sharing.

[@joshuaramcharan9735]

How to identify each? I have not looked at MTR's in such detail

[@HardHatEngineer]

You have to check MTC in that it is mentioned.