Видео с ютуба 순천석회석광산

순천석회석광산에서 20만산대발파 Blasting Conducted at Sunchon Limestone Mine 順川石灰石鉱山で20万立米の山の発破

순천석회석광산에서 22만산대발파 Conducted the blasting of 220 000 cubic meters of earth 順川石灰石鉱山２２万立米の山の大発破