ES300947A1 - Procedure for extraction of minerals that form strategies in tiled and also empinated places (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for extraction of minerals that form strategies in tiled and also empinated places (Machine-translation by Google Translate, not legally binding)
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Harpener Bergbau AG
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Harpener Bergbau AG
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Publication of ES300947A1publicationCriticalpatent/ES300947A1/en
Process of extracting minerals that form strata in inclined and also steep deposits, characterized by establishing parallel ascending coves that are filled with concrete, they become support columns between which the remaining veins or chambers of the stratum are mechanically or mechanically exploited. hydraulically (Machine-translation by Google Translate, not legally binding)
ES0300947A1963-06-141964-06-12Procedure for extraction of minerals that form strategies in tiled and also empinated places (Machine-translation by Google Translate, not legally binding)
ExpiredES300947A1
(en)
Procedure for extraction of minerals that form strategies in tiled and also empinated places (Machine-translation by Google Translate, not legally binding)
Procedure for extraction of minerals that form strategies in tiled and also empinated places (Machine-translation by Google Translate, not legally binding)