Editing Quarry (section)

==Methods of quarrying==
{{See also|Surface mining}}
The method of removal of stones from their natural bed by using different operations is called quarrying.  Methods of quarrying include:
*a) [[Digging]] – This method is used when the quarry consists of small and soft pieces of stones. 
*b) Heating – This method is used when the natural rock bed is horizontal and small in thickness. 
*c) Wedging –This method is used when the hard rock consists of natural fissure. When natural fissures are absent then artificial fissures are prepared by drilling holes. 
*d) [[Drilling and blasting|Blasting]] – It is the process of removal of stones with the help of controlled explosives is filled in the holes of the stones. Line of least resistance plays very important role in the blasting process.

Following steps are used in the blasting process; 
*1) [[Drilling]] holes – Blast holes are drilled by using drilling machines. 
*2) Charging – Explosive powders are fed into the cleaned & dried blast holes. 
*3) [[Tamping]] – The remaining portion of the blast holes are filled by clay, ash, fuse and wirings.
*4) Firing –The fuses of blasting holes are fired by using electrical power supply or match sticks.