136247 ⎘
Ventilation of mines or tunnels; Distribution of ventilating currents
Sub-classes:Mine cooling and dehumidifying system
#2METHODS AND SYSTEMS FOR SUPERVISING SAFETY VENTILATION OF UNDERGROUND GAS PIPELINE CORRIDORS BASED ON INTERNET OF THINGS
#3SYSTEMS AND METHODS FOR MEASURING MINE TUNNEL ENVIRONMENTAL INFORMATION
#4Mining method without coal pillars with roof-cutting and roadway retaining
#5BLOWER AND VENTILATION SYSTEM
#6CONTROL SYSTEM FOR USE DURING TUNNEL FIRE
#7Optimized mine ventilation system
#8Ducting system
#9Raise boring head for rotary boring
#10Ventilation apparatus with counter-rotating impellers driven by long shaft
#11TUNNEL FAN AND METHOD
#12MODULAR CONTROLLING SYSTEM FOR VENTILATION EQUIPMENT AND METHODS OF USING THE SAME
#13Optimized mine ventilation system
#14Hydraulic Gas Compressors and Applications Thereof
#15Active pressurization system making use of platform track area upper slab of underground train station
#16Method and system for fluid flow control in a fluid network system
#17Liquefied breathing gas systems for underground mines
#18Underground Mine Ventilation System
#19System and Method of Delivering Emergency Breathable Gas Supply to Underground Mines
#20Safety system and method of an underground mine
#21Optimized mine ventilation system