Negative Pressure Air-seal Induced System for Controlling Environment of Pipe Jacking Operation

Three-dimensional ventilation method and system for mining by 110 construction method in coal and gas outburst mines

Kind of no-pillar and gob-side entry retaining mining and construction method without the mining area division

Methane watchdog system, a cost effective approach to longwall methane monitoring and control

Split air cabin ventilation system for construction of tunnel inclined shaft and ventilation method using same

METHOD OF MINING SINGLE STEEPLY-INCLINED THICK COAL SEAM

Longwall mine construction method N00

Underground ventilation apparatus and method

ENSURING WORKING CONDITIONS ALONG A LONGWALL FACE

Change Over Station and Method

Blowing curtain face ventilation system for extended cut mining using passive regulator

Method for controlling longwall operations with incorporation of air-technology and climate-technology resources