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MIDTH <br /> Conclusions <br /> The MC Master Composite has higher lead and zinc concentrations when compared to the <br /> samples from the previous test work. <br /> The sulphides are mainly liberated in all the samples. Galena and Sphalerite are <br /> approximately 90% liberated while chalcopyrite and tetrahedrite are found in higher <br /> amounts of middlings (20-30%). <br /> Silver is detected in the tetrahedrite and polybasite minerals. The distribution of silver is <br /> mainly in the tetrahedrite, accounting for 75 Distribution % of the detected silver. <br /> The #2 cleaner concentrates contain mostly liberated galena and sphalerite. In the Pb #2 <br /> cleaner concentrate, a large amount of the sphalerite is liberated with potential for <br /> rejection. The Zn #2 cleaner concentrate is very clean but does contain some complex <br /> particles that may be more desirable in the Pb concentrate (containing copper and/or lead). <br /> Page 12 of 15 <br />