After waving off the first shipment from Centurion mine since 2018 – back when it was North Goonyella and caught fire – the Peabody-owned metallurgical coal mine is moving towards a longwall start by ...

Lang, Core’s chief executive officer, said in a press release. “While we are disappointed that we may be losing around two quarters of longwall production at Leer South, we are confident we are taking ...

School of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan, Hebei 063210, China Key Laboratory of Mining Development and Safety Technology, ...

(2) The special drilling structures, stepwise gradient pressurization, and segmented sequential downward grouting technique are proposed to ensure the grouting effect under goaf. (3) Finally, the ...

However, deformation persisted even after closure, expanding from the goaf area to the surrounding regions. The maximum cumulative subsidence and uplift reached −60.3 mm and 21.45 mm, respectively.