Abstract: A wireless electronic initiation device for a detonator via a shock tube comprises an initiation member for initiation the shock tube and an energy storage for providing initiation energy to said initiation member. The initiation device comprises also a wireless communication device with a receiver for receiving an initiation command in a wireless way from an initiation arrangement. The initiation device comprises also a controller, which is configured to determine said received initiation command and based on said received initiation command configured to activate said initiation member to ignite the detonator initiator (108) by the energy fed from the energy storage.

Abstract: The application relates to a charging system for charging at least one charging hole. The system comprises a charging boom, sensors of the boom, a movement mechanism of the boom, a charging head of the boom for charging the at least one hole, and a controller for controlling the boom. The sensors obtain location information relating to the boom. The controller defines locations of the charging head in a co-ordinate system of the boom on the grounds of at least the obtained location information. The controller also operates the movement mechanism to move the charging head between the defined locations in accordance with precalculated movements.

Abstract: A dual actuated power pack (300) comprises a battery (104) and first (101) and second (102) electric motors, as well as a power generator (103). The first electric motor (101) is powered by the battery (104) and the second electric motor (102) by a grid (106). The first and second electric motors (101, 102) are mechanically coupled (108) with each other so that when said second electric motor (102) is powered, said second electric motor (102) actuates (109) said power generator (103) and said first electric motor (101) at the same time, whereupon the first electric motor (101) functions as a hi-power battery charger and recharge the battery (104) when said second electric motor (102) actuates (109) the power generator (103). When the second electric motor is not used, the first electric motor (101) is powered (104, 105), and the power generator (103) is actuated (108) by said first electric motor (101).

Abstract: An arrangement for providing explosive charging and a plug into a bore hole, wherein a hose comprising at least one first conduit is introduced into said bore hole. Also explosive material is introduced to an outlet of said first conduit and thereby into said bore hole. In addition a plug is introduced into said bore hole by the help of said hose. The plug has a diameter, the size of which is configured to be manipulated after or during introducing into said bore hole at a certain depth so that after said introducing the diameter of the plug is larger than before said introducing and so that the surface of the plug after manipulating the size of diameter essentially make a physical contact with the bore hole surface. The plug is introduced by said hose in a releasable manner so that after or during the manipulation of the plug diameter size the plug is configured to be released from the hose and to stay in said bore hole essentially at said certain depth.

Abstract: “An arrangement for providing explosive charging and a plug into a bore hole, wherein a hose comprising at least one first conduit is introduced into said bore hole. Also explosive material is introduced to an outlet of said first conduit and thereby into said bore hole. In addition a plug is introduced into said bore hole by the help of said hose. The plug has a diameter, the size of which is configured to be manipulated after or during introducing into said bore hole at a certain depth so that after said introducing the diameter of the plug is larger than before said introducing and so that the surface of the plug after manipulating the size of diameter essentially make a physical contact with the bore hole surface. The plug is introduced by said hose in a releasable manner so that after or during the manipulation of the plug diameter size the plug is configured to be released from the hose and to stay in said bore hole essentially at said certain depth.