Excavation of barrier pillars during mining of ore fields by caving systems
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Abstract
In the development of horizontal or gently dipping ore deposits, to improve ventilation conditions, prevent the penetration of water and gases, localize cave‑ins and for other purposes, it is sometimes necessary to leave barrier pillars that divide the ore body into separate blocks. In case of significant ore reserves, these pillars are sometimes extracted after mining of adjacent blocks. ...
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