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# Expo

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Expo
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## Santa Cruz De La Sierra

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METODO DE PERFORACION A PERCUCION CONTENIDO:INTRODUCCIONHISTORIAHERRAMIENTASCARACTERISTICASVENTAJAS y DESVENTAJAS  INTRODUCCION  Es un método de peror!"#\$n pr#m#t#%o&  Se '!s! en (!"er "!er (err!m#ent!s pes!d!s repet#d!mente ! !)tur!s * puede %!r#!r entre +, ! -, "m tom!ndo en "uent! )! orm!"#\$n *ue se est! peror!ndo&  E) s#stem! de peror!"#\$n de po.os de per"us#\$n se ut#)#.! p!r! e) d#/metro med#o01r!nde y tr!'!2os de peror!"#\$n de pround#d!d '!2o med#!no&  Pround#d!d \$pt#m!: desde , (!st! +,, m  D#/metro \$pt#mo: desde 4,, (!st! 5&6,, mm  HISTORIA DE 7A PERFORACION A PERCUSION  7! peror!"#\$n y! er! ee"tu!d! mu"(o t#empo !tr/s&  M!yormente er! ut#)#.!d! p!r! en"ontr!r !1u! o s!) pero (#dro"!r'uros&8!1u! p!r! su's#sten"#! de sus !n#m!)es y s!) p!r! )! "om#d! 9   Ten#!n un s#stem! pr#m#t#%o por med#o de po)e! (!"er "!er un! (err!m#ent! pes!d! (e"(! de "!;!s de '!m'u&8)os "(#nos ueron )os pr#meros en ee"tu!r)!9  P!r! e))os en"ontr!r (" so)o er!"ont!m#n!r e) !1u! *ue *uer<!n en"ontr!r  ESTRUCTURA DE7 METODO A PERCUSION
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