ALL ABOUT EXPLOSIVES-1

EXPLOSIVES:-

1. What is an explosive??

An explosive is a reactive substance which contains high amount of potential energy and can create an explosion if subjected to certain conditions(detonation depends on the sensitivity of the explosive). It usually detonates/explodes releasing high amount of light,heat,pressure and shock wave which could cause severe damage to surrounding.
   
     2. History of explosive:-

explosive history is a bit uncertain as their is no written statement regarding its discovery but it is assumed that its discovery happened in China (used in firecrackers etc.).
In the 1800s, BLACK POWDER (gun powder) came into existence and from then onwards it only improved.
industrial revolution gave more improved explosive. Soon, TNT (tri nitro touluene) and Dynamite came into effect but owing to their sensitivity and low water resistance nature more effective and efficient explosive were required.
soon the era of nitroglycerene based explosive came into effect, ANFO (ammonium nitrate fuel oil) is a widely popular explosive and is still being used. A more improved formulae of ANFO is HANFO abbreviated as heavy-ANFO. (HANFO has more rate of reaction than ANFO hence more effective and efficient)
But now-a-days SLURRIES and EMULSION based explosives have taken their(anfo's) place. These explosives are more water resilient, better storage, better sensitivity etc.

rest part of the explosive will be uploaded soon.
stay tuned for that and please click on the follow button :) 

JIMENO & JIMENO - book for drilling and blasting

Hola guys, you can download the 'Jimeno & Jimeno' authored book for the subject DRILLING and BLASTING from the link given below... Hope it would help :)
Jimeno & Jimeno ~ drilling and blasting

SUSHIL BHANDARI - drilling and blasting (book)

book for drilling and blasting consisting of

1. introduction to blasting
2. explosives
3. properties of explosives
4. explosive system and priming system
5. selection of suitable explosive
6. initiating devices
7. initiation system and delay timings
8. designing surface blasting
9. drift and channel blasting
10. fly-rock during blasting operation
11. controllable blasting

All the above topics are discussed in details in the link given in the beginning of this post.
check it out and don't forget to follow my blog.
Thank you!! :)
https://drive.google.com/folderview?id=0B727YT7LzskWRFRNV3p6bUFxWTQ&usp=sharing

EXPLOSIVES - a brief introduction about explosives used in mining and other blasting operations

Every kind of explosives which are used in the mine sites and other civil engineering operations are discussed in the 'pdf' uploaded below (click and go have a look at those)

EXPLOSIVES- a brief introduction

 the above uploaded pdf has a brief introduction about explosives,history of explosives, its broad classifications, family tree of explosives and initiating system.

WHY WE NEED EXPLOSIVES IN MINING??
rock is blasted either to break ore or waste or to create some space. In mining operation, the objective is to break rock into required size and extract the largest possible quantity of valuable resources from the ground at minimum cost.