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Priority to SE7612274ApriorityCriticalpatent/SE404396B/sv
Publication of SE404396BpublicationCriticalpatent/SE404396B/sv
E21C37/00—Other methods or devices for dislodging with or without loading
E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
E21C37/12—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid
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SE7612274A1976-11-041976-11-04Prosektil for brytning av ett fast material
SE404396B
(sv)