Cartridge - An individual closed shell, bag, or tube of circular cross section containing explosive material. Cartridge Count (Stick...

Air Blast - the airborne shock wave or acoustic transient generated by an explosion. Ammonium Nitrate - The ammonium salt of nitric acid...

Chapman-Jouquet plane for Rock Breakage 🪨 🪨 🪨 🪨🪨 🪨 🪨 🪨 The space is Bounded by two infinite planes. Exploded region(shock wave)...

PRODUCTIVITY pro·duc·tiv·i·ty Latin Origin /ˌprōˌdəkˈtivədē Productivity is the commonly relation between the output volume and the...

•Bolt acts on the basis of three principles:- 1) Suspension effect:-. The immediate layers of roof are held by anchorage(लटकाना) from a...

UNSAFE ACTS, UNSAFE CONDITIONS, NEAR MISS and ACCIDENT

Roof Bolt:- It is made of MS or TMT steel bar & fixed in a hole by drilling vertical in roof & it grips the strata & support the...

BREAK DETECTOR It is used to detect cracks or breaks in blasting hole in U/G Mines. Regulation require that no shot hole shall be charged...

CLASS 1 - GUN POWDER CLASS 2 - NITRATE MIXTURE (EXAMPLE- GN/1 , POWERFLO, GODYNE, PENTADYNE ETC.) CLASS 3- NITRO COMPOUNDS. EXAMPLE-...

It is the ratio between length of advanced face to the Length of drilled hole. In drilling technology we consider a important factor to...

Low Rank coal. High Rank coal •Low carbon • High carbon content content •Low calorific ...

Contiguous Seam Extraction Parting Between two seam less than 9 mtrs but more than 3 mtrs.. TOP Seam ------------------------------------...

Open PIT & open CAST mining Open pit or open cast mining is usually employed to exploit a near surface deposit or one that has a low...

Detonators are use to detonate or initiate high explosive by producing detonation wave. Detonators have tube like structure, made up of...

Coal is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. Coal is world's leading...

Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam,...