PL299599A1 - Method of reducing stress concentration in the region of mining panels while mining useful minerals using the breast-and-pillar working method
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Method of reducing stress concentration in the region of mining panels while mining useful minerals using the breast-and-pillar working method
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Application filed by Cuprum Ct Badawczo P Miedzi SpfiledCriticalCuprum Ct Badawczo P Miedzi Sp
Priority to PL29959993ApriorityCriticalpatent/PL170940B1/en
Publication of PL299599A1publicationCriticalpatent/PL299599A1/en
Publication of PL170940B1publicationCriticalpatent/PL170940B1/en
PL29959993A1993-07-051993-07-05
Method of reducing the stress concentration in the exploitation fields when extracting useful minerals with chamber and pillar systems
PL170940B1
(en)