Abstract: Method and device for destruction of objects stored in an alarm-protected security container. There is used a destructive agent which is distributed over the object or objects when the alarm is triggered, so as to mark and/or destroy the object/objects. There is also used a destructive device which includes an explosive agent that acts at least partially on the object/objects when the alarm is triggered. The device includes a channel whose opening faces towards the object/objects. The destructive agent is encapsulated in the channel and the explosive agent is disposed adjacent the channel. The channel has a generally U-shaped cross section and includes end-walls.

Abstract: A device and a method for rendering useless a weapon, such as a rifle, that includes a barrel, in the event of the weapon being taken or manipulated unlawfully. The device includes a rod having a cavity or bore. The rod is adapted for insertion into the barrel of the weapon, and an explosive charge is placed in the cavity of the rod. When an alarm is triggered, the explosive agent is activated and the rod and the barrel are deformed.

Abstract: A method of destroying an object(s) stored in an alarm-protected safety enclosure, there being a destructive agent which is distributed over the object(s) when an alarm is triggered. The destructive agent marks and/or destroys the object(s) within the safety enclosure. A first explosive substance and a second explosive substance are used to shred the object(s) and to distribute the destructive agent over the object(s). The first explosive substance may be triggered by the alarm prior to the second explosive substance. The triggered first explosive substance shredding the object(s) and the triggered second explosive substance distributing the destructive agent over the object(s).

Abstract: The invention relates to a method and a device for cutting off the trunk of a tree by detonation of an explosive charge in contact with the trunk. The invention solves the problem of providing a safe and convenient way of cutting off the trunk of a tree which has fallen to an inclined position where it rests against another tree or against an electric overhead line. To the trunk there is, at the desired level above ground, attached a holder which carries an explosive charge and can from the ground be mounted on the trunk, whereupon the charge is detonated and the trunk section above the cut-off level severed from the section below. In this way the top section is either directly released from its support or can conveniently be so released.