Editing Borehole Drilling

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==Drilling Boreholes==
 
==Drilling Boreholes==
 
   
 
   
''Note: in this Atlas, the word '''borehole''' is generally used to mean a drilled hole (by manual or mechanical rig), and the word '''well''' is generally used to mean a dug hole. Elsewhere, the word well is often used interchangeably with borehole to also mean a drilled hole.''
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''Note: in this Atlas, the word borehole is generally used to mean a drilled hole (by manual or mechanical rig), and the word well is generally used to mean a dug hole. Elsewhere, the words well is often used interchangeably with borehole to also mean a drilled hole.''
  
 
There are two main approaches to drilling boreholes : drilling with a mechanised rig; and manual drilling. The most appropriate technique will depend on the hydrogeology, the required yield, and available funds.  
 
There are two main approaches to drilling boreholes : drilling with a mechanised rig; and manual drilling. The most appropriate technique will depend on the hydrogeology, the required yield, and available funds.  

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