A missile includes a pyrotechnic charge. This shallow type containment chamber has angled sidewalls that permit underground pipeline connections to be made directly to specially designed shear valves without the need for a riser pipe assembly. By raising the viscosity of the extraction solution the mixing durability of the extraction dispersion can be increased and resulting of that the amount of residual drops is decreased. The method further can output the plurality of addition results and the plurality of subtraction results. In one embodiment, the working mode includes a default mode, a programmable mode, a testing mode and a shutdown mode. The insert is used for introducing a flavour, or increasing the level of flavour applied, to one or more smoking articles in a package of smoking articles, by enclosing the insert within such a package.