Mining Classroom

Q.What is Magazine? Ans... Magazine is a place where the Detonator and Explosive is stored. Site of Magazine The site of magazine is at specified distance from residential, public places, public roads etc. Distance depends upon the capacity.  The most important thing is, site and the construction both are approved by Explosive Inspector. Procedure of Establishment The application form "C" and "D" should be made to the regional controller of Explosives with six copies of site plan and magazine construction. After that the controller forwards these documents to chief Controller of Explosives. CCE issue a form "E" and a draft copy of "L" with site plane to District Magistrate who will issue a No objection Certificate. After that CCE allows to proceed construction and also issue a licence in form E. When the construction is complete, Regional Controller inspect the building. The licence must be renewed annually. Portable Magazin...

In this post we will discuss about the Charge preparation for underground blasting... For blasting, the charging of hole may consist of one or more cartridge and the separation of cartridge should be least as much possible. Among the charged explosive in a hole, it is necessary that a Detonator is inserted in one of the explosive. The cartridge having Detonator in it, called prime cartridge. To insert Detonator, a hole is maked with a Pricker of brass or wood. Insert the Detonator until it is completely buried in explosive after that put back the flap of cartridge and bind the cartridge around with wire to prevent the detonator to come out during charging. Charging of Shot Holes Proper charging of shot hole is important to get the desire results. We follows two methods to Charge the holes.. 1. Direct Initiation 2. Inverse Initiation Here we will discuss these two methods.. Preparation of Shot Hole Direct Initiation This is the method of Chargi...

Hello, if your here, then I'm sure that you want to gather knowledge that "how to be a overman"?  Education If you want to be an Overman, in this case you must have a Diploma certificate. Apart from this there are also few certificates are required. List of certificate 1. Diploma in Mining Engineering 2. Valid First-aid Certificate 3. Gas Testing Certificate 4. PG PT Certificate 1. Diploma in Mining If you wants to pursue your career in mining, in this case diploma in mining is required to be overman. The duration of diploma is from 2-3 for lateral and regular respectively. You can take lateral entry after +2 (science) and who wants to take admission for 3 years, it is required that he have passed the the. *For my personal point of view, I will suggest for three year diploma. 2. Valid First-aid Certificate If you want to serve in Mines the valid First-aid is required because if someone is mines hey injured then you have to do his First-a...

In previous post we have discussed about Fire damp Explosion. Now in this post we will discuss a detail about 1. Coal Dust Explosion. & 2. How to prevent it?  You May also like To Read These....       Fire Damp Explosion        Rope Splicing Let's Begin.... Coal Dust Explosion  To explode the coal dust, it has to be suspended in air as a cloud, which is capable to burst and propagate through out the mines. This propagation is due to the presence of coal dust through out the mines. As only 1g/c.c is required for propagation and it is known that no part of mines is free from that.                Before explosion the coal dust should be in the form of cloud in air and the density (30 to 40g/cubic meter) of this so much that no can see through it. To explode coal dust only sufficient density and ignition source is required. As we have discussed in previous post that the Fi...

Before dealing with Fire Damp.. Here we will discuss About the Definition of Explosion and also we will know about the types of Explosion in Mines. ..So Let's Go... Q.What is Explosion? Ans...:- Explosion can be defined as it the process of sudden change in the volume of any substance instantaneously into gaseous product which produces large quantity of heat energy. Alike above explained, the explosion in mines are of three types. 1. Firedamp Explosion 2. Coal Dust Explosion 3. Water Gas Explosion In this post we will only discuss about "Fire Damp Explosion". 1. Explosion of Fire Damp(Methane) Fire damp is the most common cause of explosion in Coal Mines. The Coal Dust Explosion alone is very rare though it have been initiated by fire damp many times. The explosibility limit of firedamp is between 5.4 to 14.8% in presence of some ignition source and the percentage of Oxygen with respect to Methane percentage. "The maximum explosion...

Disclaimer This post is only valid for Indian System of GT examination. Introduction If you want to Get GT(gas Testing) certificate then you are welcome. Here I will share the complete procedure to take GT Certificate. If you are studying Mining Sirdar, Diploma in Mining or B.tech. It is very needy that you should have Gas Testing certificate to apply for different posts of mining industry. The certificates are signed by the Principal of College or Mines Manager. If you are here I'm sure that you already knows manythiong about what are Gases and itsi physiology. If you are appearing for GT, The posts on Gas Testing may help you.. Document needed To apply Gas Testing Examinatio  Here is the complete list of Documents which is required to apply G.T. 1. Gas Testing Form Firstly You have to fill a G.T. form properly. Here is the new GT form New GT Application Form 2.Lamp Handling certificate Q. Why lamp Handling Certificate? Ans.. Lamp ...

In this post we will deal about the Definition of Secondary Blasting and types of Secondary Blasting . Some other Blasting are also available you can read about that. So let's start... Definition of Secondary Blasting The technique used to blast the boulders to achieve the fragmentation is called secondary blasting. This blasting is done to get the rocks which can be easily handled. Why and how to do secondary blasting? Why secondary blasting? We does secondary, in case when the primary blasting don't give fragmentation of rock which can be easily handled. The secondary blasting is followed after the primary blasting. How to do secondary blasting? To do secondary blasting we have to follow some methods which will give us batter resultant. These are here 1. Plaster shooting or Mud Capping.. As name indicates mud capping, the primer cartridge is place at top of Boulder and covered with mud. The blasting is done from the safe place by electric detonator...