Circular 17/2013/TT-BCT dated July 17, 2013 promulgating on the National Technical Regulation for permissble non-electrical delay detonator for using in underground mine in present of methane gas.
The Circular issues the National Technical Regulation for permissble non-electrical delay detonator for using in underground mine in present of methane gas: QCVN 03:2013/BCT
The Circular takes effective since November 5, 2013
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