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Percussion - Stone hammer

170 bytes added, 22:39, 1 May 2012
Field experiences
The stone hammer is mainly used in India and Nicaragua, and sometimes in Madagascar.
The percussion gouge is mainly used in western countries.
 
"The Stone-hammer is slow but does not give us the headache of the cost and maintenance of motorized drilling rigs". A. Fajardo, Director of the Nicaraguan NGO Cesade .
==Reference manuals, videos, and links==
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