43-101 2008 Technical Report On The La Fortuna Project, Durango ...
43-101 2008 Technical Report On The La Fortuna Project, Durango ...
43-101 2008 Technical Report On The La Fortuna Project, Durango ...
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Table 9. Castle Gold test heap leach results and observations.<br />
Heap 1 - Low Grade Ore<br />
<strong>The</strong> cyanide solution application rate was consistent<br />
at ~0.002 gpm/ft 2 .<br />
Leaching was performed for a period of 45 days.<br />
<strong>The</strong> decision to discontinue leaching was made<br />
based on the fact that the difference between the<br />
gold content in the barren and pregnant leach<br />
solutions at this time was extremely low (~0.03<br />
ppm). <strong>The</strong> data indicates that the vast majority of<br />
leaching was completed in the first 25 days.<br />
Dissolved copper levels in the leach solutions were<br />
extremely low (