METHOD OF EXCAVATING THICK STEEP COAL SEAMS von GUSEV DMITRIJ ,SU, SHAKHMATOV VLADIMIR F,SU, ZOLOTAREV GRIGORIJ M,SU, PLYUKHIN BORIS D,SU, KHAN VALENTIN V,SU, FAJNER ILYA A,SU, CHERNODAROV ALEKSANDR ,SU, SUCHKOV EVGENIJ V,SU, BIRYUKOV ROMAN A,SU, KULAKOV YURIJ N,SU

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