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      <title>Actividad 2. Linea del tiempo by Mendoza Alvarez Jonathan</title>
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      <description>Linea del tiempo de Metalurgia y Siderurgia</description>
      <language>en-us</language>
      <pubDate>2021-03-02 01:19:41 UTC</pubDate>
      <lastBuildDate>2025-03-16 09:50:18 UTC</lastBuildDate>
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         <title>3000 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256582317</link>
         <description><![CDATA[<div>El humano trabajo desde finales del neolítico, el cobre, oro y plata golpeándolo hasta dejarlo plano como una lámina. Hierro esponjoso.</div>]]></description>
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         <pubDate>2021-03-02 04:45:40 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256582317</guid>
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      <item>
         <title>3000 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256593353</link>
         <description><![CDATA[<div>Aprenden a fundir en horno y vaciarlo en moldes, permitiendo fabricar mejores herramientas y en mayor cantidad, originando la Edad del Cobre.</div>]]></description>
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         <pubDate>2021-03-02 04:50:42 UTC</pubDate>
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      <item>
         <title>3000 a.C. - 1200a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256595936</link>
         <description><![CDATA[<div>Experimentación con arsenico que produjo cobre arsenicado, o estaño que dio lugar al bronce e inicio la Edad del Bronce.</div>]]></description>
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         <pubDate>2021-03-02 04:51:54 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256595936</guid>
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      <item>
         <title>2000 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256598777</link>
         <description><![CDATA[<div>Trabajo del hierro en Anatolia.</div>]]></description>
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         <pubDate>2021-03-02 04:53:10 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256598777</guid>
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      <item>
         <title>2000 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256602723</link>
         <description><![CDATA[<div>En África Negra surgió de forma autóctona y sin pasar por las fases previas de la metalurgia eurostatica (cobre y bronce).</div>]]></description>
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         <pubDate>2021-03-02 04:54:42 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256602723</guid>
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      <item>
         <title>2000 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256606519</link>
         <description><![CDATA[<div>Se encontraron artefactos en India de esta fecha, artefactos de hierro. </div>]]></description>
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         <pubDate>2021-03-02 04:56:15 UTC</pubDate>
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      <item>
         <title>1700 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256610962</link>
         <description><![CDATA[<div>Primeras escuelas de metalurgia</div>]]></description>
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         <pubDate>2021-03-02 04:58:12 UTC</pubDate>
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      <item>
         <title>1000 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256621603</link>
         <description><![CDATA[<div>Primeras fundiciones del hierro en China.</div>]]></description>
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         <pubDate>2021-03-02 05:02:57 UTC</pubDate>
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      <item>
         <title>700 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256624292</link>
         <description><![CDATA[<div>Conversion del hierro en acero mediante cementacion.</div>]]></description>
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         <pubDate>2021-03-02 05:04:15 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256624292</guid>
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      <item>
         <title>500 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256628725</link>
         <description><![CDATA[<div>Creación del acero en pueblos celtiberos.</div>]]></description>
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         <pubDate>2021-03-02 05:06:15 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256628725</guid>
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      <item>
         <title>1300 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256629954</link>
         <description><![CDATA[<div>Aparición de los altos hornos.</div>]]></description>
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         <pubDate>2021-03-02 05:06:49 UTC</pubDate>
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      <item>
         <title>1492 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256632240</link>
         <description><![CDATA[<div>En América la siderurgia llego con la conquista española. </div>]]></description>
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         <pubDate>2021-03-02 05:07:53 UTC</pubDate>
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      <item>
         <title>1540 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256636018</link>
         <description><![CDATA[<div>La metalurgia comienza a tener un impacto medioambiental en America del Sur.</div>]]></description>
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         <pubDate>2021-03-02 05:09:35 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256636018</guid>
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      <item>
         <title>1546 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256641604</link>
         <description><![CDATA[<div>Primera mina de oro y plata en América.</div>]]></description>
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         <pubDate>2021-03-02 05:11:54 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256641604</guid>
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      <item>
         <title>1565 a.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256644102</link>
         <description><![CDATA[<div>Felipe II incauta alumbre sin explotar de España.</div>]]></description>
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         <pubDate>2021-03-02 05:13:01 UTC</pubDate>
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      <item>
         <title>1574-1810 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256651418</link>
         <description><![CDATA[<div>Extracción de mercurio en Santa Barbara ocasionando 17,000 toneladas de vapor de mercurio. </div>]]></description>
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         <pubDate>2021-03-02 05:15:51 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256651418</guid>
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      <item>
         <title>1776 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256656223</link>
         <description><![CDATA[<div>Maquina de vapor para fundir hierro por Wilkilson "El rey de hierro"</div>]]></description>
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         <pubDate>2021-03-02 05:17:51 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256656223</guid>
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      <item>
         <title>1783 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256670536</link>
         <description><![CDATA[<div>Horno de pudelado y laminación, mejorando la calidad de lingotes de hierro colado.</div>]]></description>
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         <pubDate>2021-03-02 05:23:55 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256670536</guid>
      </item>
      <item>
         <title>1800 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256672520</link>
         <description><![CDATA[<div>Ventilación forzada mediante fuelles de piel accionados a mano, bajo horno. </div>]]></description>
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         <pubDate>2021-03-02 05:24:50 UTC</pubDate>
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      </item>
      <item>
         <title>1829 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256676140</link>
         <description><![CDATA[<div>Nielsen, consigue un ahorro del 40% de combustible con aire calentado.</div>]]></description>
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         <pubDate>2021-03-02 05:26:27 UTC</pubDate>
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      <item>
         <title>1847-1855 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256679899</link>
         <description><![CDATA[<div>Fiebre del oro.</div>]]></description>
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         <pubDate>2021-03-02 05:28:11 UTC</pubDate>
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      </item>
      <item>
         <title>1856 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256681721</link>
         <description><![CDATA[<div>El ingeniero inglés Henry Bessemer, crea un convertidor para obtener acero con 1% de carbono.</div>]]></description>
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         <pubDate>2021-03-02 05:29:05 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256681721</guid>
      </item>
      <item>
         <title>1860 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256683356</link>
         <description><![CDATA[<div>Horno de solera.</div>]]></description>
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         <pubDate>2021-03-02 05:29:52 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256683356</guid>
      </item>
      <item>
         <title>1877 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256684794</link>
         <description><![CDATA[<div>Convertidor Thomas-Bessemer.</div>]]></description>
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         <pubDate>2021-03-02 05:30:30 UTC</pubDate>
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      </item>
      <item>
         <title>1893 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256686806</link>
         <description><![CDATA[<div>Desarrollo de la soldadura aluminotermica.</div>]]></description>
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         <pubDate>2021-03-02 05:31:27 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256686806</guid>
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      <item>
         <title>1907 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256688539</link>
         <description><![CDATA[<div>Creación de la fundición SMELTER.</div>]]></description>
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         <pubDate>2021-03-02 05:32:19 UTC</pubDate>
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      <item>
         <title>1914-1918 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256691420</link>
         <description><![CDATA[<div>Auge de la fundición SMELTER.</div>]]></description>
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         <pubDate>2021-03-02 05:33:44 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256691420</guid>
      </item>
      <item>
         <title>1980 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256692659</link>
         <description><![CDATA[<div>Desarrollo de los aceros inoxidables dúplex. </div>]]></description>
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         <pubDate>2021-03-02 05:34:20 UTC</pubDate>
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      </item>
      <item>
         <title>1984 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256694621</link>
         <description><![CDATA[<div>Sistema Fold-forming system desarrollado por Charles Lewton -Brain para producir formas complejas tridimensionales desde hojas de metal. </div>]]></description>
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         <pubDate>2021-03-02 05:35:20 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256694621</guid>
      </item>
      <item>
         <title>1992 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256696866</link>
         <description><![CDATA[<div>Construcción refineria “La oroya”, metales polimetálicos.</div>]]></description>
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         <pubDate>2021-03-02 05:36:20 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256696866</guid>
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      <item>
         <title>2017 d.C.</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256698425</link>
         <description><![CDATA[<div>Cierre de la fundicion SMELTER.</div>]]></description>
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         <pubDate>2021-03-02 05:37:04 UTC</pubDate>
         <guid>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256698425</guid>
      </item>
      <item>
         <title>Siglo XXI</title>
         <author>gorex333</author>
         <link>https://padlet.com/gorex333/grfqnollb9c6psmw/wish/1256698868</link>
         <description><![CDATA[<div>En la actualidad la rama siderurgia de la metalurgia es muy importante al ser la mas extendida debido a la alta demanda del uso del metal en el mundo.<br><br></div>]]></description>
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         <pubDate>2021-03-02 05:37:17 UTC</pubDate>
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