Deposing initiary compositions

Nanothermite initiatory composition comprises: (i) a nanothermite suspension of a metal(M)oxide and a metal (M') in a solvent, wherein the average particle size of the metal(M)oxide and a metal (M) is less than 1000 nm, (ii) wherein said nanothermite suspension comprises a charging reagent comprising a reagent capable of forming a stable complex with each of the metal(M)oxide and the metal (M'), to from a metal(M)oxide complex, and a metal (M') complex that have the same electrostatic charge, such that said metal(M)oxide complex and a metal (M') complex repel each other in said suspension, wherein the admixture of the binder, nanothermite suspension charging reagent, has been caused to be mixed under Resonant Acoustic Mixing to provide a stable suspension of a nanothermite complex. Method of filling an explosive device comprises step (ii) above followed by filling the device with said composition.