the sonochemical tatb can be produced by dropping a tctnb solution into a saturated solution of ammonia to produce refined tatb crystals this method provides a higher degree of wetting in regard to explosive crystals this method is also a prerequisite to form automatic production of the explosive mixture of the present invention the very fine tatb which is produced upon the reaction taking place can be filtered off washed and dried and can then be used as a binder for secondary explosive crystals the pressed insensitive explosive mixture of the present invention contains from about 3 to about 15 to by weight of sonochemically tatb with an amount from about 5 to about 12 by weight being more preferred in an alternative mode of production the following can be employed in the present invention using ultrasound a suspension comprising the respective secondary explosive in a as delivered moistened condition that is to say secondary explosive crystals in an excess aqueous about 30 ammonia solution is produced and an amount of tctnb calculated in accordance with a reaction conversion effect dissolved in toluene is added by dropwise the resultant very fine tatb produced by this alternative method can now be deposited directly in situ on the suspended secondary explosive crystals this results in a tatb coating on the secondary explosive crystals that is the tatb fills in the pores of the rough secondary explosive crystals providing a product that is relatively smooth it was determined by laser diffraction measurements that by virtue of the foregoing dropping process in comparison with the conventional dropping process it is possible to achieve a further reduction in the mean particle diameter of the tatb particles which in turn further.