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CARDOX GREAT BRITAIN Ltd
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CARDOX GREAT BRITAIN Ltd
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Publication of FR1113832ApublicationCriticalpatent/FR1113832A/fr
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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FR1113832D1954-10-181954-10-18Procédé et appareil perfectionnés pour l'abattage de charbon et d'autres minerais à la poudre
ExpiredFR1113832A
(fr)