Explanatory notes
… more detonations, and generally comprise a core of PETN or penthrite (pentaerythritol tetranitrate) or other explosive … charge of primary explosive plus a charge of, e.g., PETN or penthrite, hexogen or tetryl, in a tube of metal or plastics … somewhat larger charge of another explosive (e.g., PETN or penthrite, hexogen or tetryl). This group also …