Preparación del Bloque Esmeralda para explotación de la asociación de desarrollo minero nivel O, de la parroquia Huertas, cantón Zaruma.
He mineralized district Portovelo - Zaruma, is sufficiently extensive and varied, the same that was discovered and exploited rustically from the time of the Incas, according to available historical data. With this precedent, the first mining company was established in 1878, called "Zaruma Gold...
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| Format: | bachelorThesis |
| Sprache: | spa |
| Veröffentlicht: |
2004
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| Online Zugang: | http://dspace.unl.edu.ec/jspui/handle/123456789/18234 |
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