FIELD: mining industry. SUBSTANCE: this can be used in development of flat-lying potassium seams at small thickness of water-protection bed and nonuniform extraction of ore. According to method, created in process of development are interchamber and relieving pillars. Relieving pillars are formed of width at which degree of their loading reaches unit after crushing of interchamber pillars. EFFECT: high efficiency. 1 dwg
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Authors
Dates
1998-01-27—Published
1996-06-11—Filed