May 5, 2026
The present invention concerns an explosive material charging device and a method of positioning the explosive material charging device in a borehole. The explosive material charging device comprises a top anchor unit and a bottom anchor unit each configured to engage the borehole wall, an expandable tube member arranged between the top anchor unit and the bottom anchor unit and configured to be charged with explosive material, the bottom anchor unit comprises a backflow prevention valve device configured to prevent the explosive material to flow out from the expandable tube member, wherein the backflow prevention valve device is openable for permitting a charging hose to enter the expandable tube member for reaching the interior of the top anchor unit.
Mar 10, 2026
A device which is used to position a detonator assembly in a borehole. The device has a housing with an open mouth into which one end of the detonator assembly is inserted, formations on the housing which then engage with the detonator assembly, and flexible elements which extend from the housing and which are configured, in use, to engage with a wall of a borehole into which the device and the detonator assembly are inserted.
