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link 16.10.2009 7:27 |
Subject: entries and roadsides mining. Krasnoarmejskaja – Sapadnaja Nr.1 Implementation of roof bolting in entries and roadsides with the intention to use a compound ventilation (y-design) at the longwall to reduce a accumulation of methane and get a higher productivity of the longwall face.Так будет правильно? |
по-моему так - "крепление кровли на входах в штрек и обочинах" |
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