GATE END BOX: GEB is an Electric Panel which is used for feeding Electrical power to the Electrically operated mining machineries such as...

By MiningSYNC / December 30, 2021 / GATE 2022 SAMPLING - The process of selecting representative sample from a population to study...

Motive column : Ø The natural ventilation air current flow around the mine simply because the downcast air column is heavier than the...

VENTILATION Ventilation of mines is a form of air conditioning by the distribution of air currents in U/G opening in quantity sufficient...

Que- Radial stress on the excavation boundary of a circular Tunnel is : A) Always zero B) Always positive C) Always Negative D) positive...

Humidity:- the water content present in atmosphere is called Humidity. there are three type of Humidity:- 1) Absolute Humidity:- ratio...

Temperature:- heat content of any substance. Dry bulb temp.= It's a ambient temperature of air Wet bulb temp.= Temperature of air at...

Que- At a fan pressure of 450 Pascal, 50m³/s of air flows through a mine. when fan stops 10 m³/s of air still flows in the same...

Coal India Limited Announces Recruitment of Management Trainees Via GATE 2021 Score By MiningSYNC / August 4, 2021 / Coal India Limited...

CoalDust Explosion 👉Coal dust, when suspended in air, is capable of bursting into explosion & propogate it even in the absence of...

Fire Damp Explosion Presence of firedamp in air between 5.4% to 14.8% forms an explosive mixture. if suitable source of Ignition is...

Mine Explosion An explosion is a sudden combustion process of great intensity, accompanied(साथ में) by release of large quantities of...

** INTRODUCTION :- In Mining, we always try to Achieve Higher Production by applying Highly Efficient Machines/Equipment and Modern...

2.1.1 Barton’s Q-system ( Tunneling Index, Rock quality index, Norwegian Geotechnical Institute) The Q-system for rock mass...

Mine Subsidence Subsidence is a time-dependent deformation either natural or man induced , in which there is a lowering of ground surface...

ATKINSON'S EQUATION Before discussing Atkinson's formual/equation . we have to understand the LAW'S OF MINE AIR FRICTION, then we can...

SPACE MINING Space Mining The costs run high and the returns are not immediate but extraterrestrial mining is now within the realms of...

•Mixture of Gases:- Fire Damp:- It is a mixture of methane & other trace amount of other gases. Black Damp/ Choke Damp:- Mixture of...

Spontaneous Heating:-It is defined as the process of self heating resulting eventually in its ignition without the application of...

GENERAL PRINCIPLE: Blast casting by explosives in surface coal mines offers significant operational and economical benefits. "Blast...