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Application filed by Украинская Инженерно-Педагогическая АкадемияfiledCriticalУкраинская Инженерно-Педагогическая Академия
Priority to UAU201110106UpriorityCriticalpatent/UA69113U/en
Publication of UA69113UpublicationCriticalpatent/UA69113U/en
A method for protection of seam workings includes protection of seam workings with coal pillars. One performs protection of seam workings with coal pillars with width 60-80 m with following extraction of those.
UAU201110106U2011-08-162011-08-16Method for the protection of in-seam workings
UA69113U
(en)