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-38- <br />DRAINABILITY TEST RESULTS <br />Sample Initial Initial Stabilized Time to Relative <br />No. Moisture Dry Moisture Stabilization, Density <br />Content Density Content (Days) ( %) <br />( %) (pcf) ( %) <br />1 18.8 96.4 18.4 .4 0 <br />2 18.8 96.4 18.0 0 0 <br />3 18.8 109.3 18.0 .2 50 <br />4 18.8 109.3 17.9 .2 50 <br />As can be seen by the results of the table, rapid gravity <br />drainage from the sample occurred in a period of less than one -half <br />day. The reduction in moisture content varied from 0 to .9 %. The <br />testing is still being conducted to determine the quantity of water <br />which will flow from the pile over a relatively long term. The test <br />has been in progress for three weeks at the time of this writing, and <br />it appears that no additional measurable moisture will be released <br />from the sample beyond the stabilized moisture contents presented <br />above. <br />The centrifuge moisture equivalent for the mine tailings is <br />between 20.8% and 21.8% moisture as a percent of dry weight. In our <br />opinion, the centrifuge moisture equivalent tests and the gravity <br />drainage tests conducted indicate that a very small amount of moisture <br />can be expected to drain from the waste rock pile if the leached ore <br />is allowed to drain in the vat for a period of two days prior to being <br />tockpiled. In fact, the amount of water which actually drains in the <br />ild may be somewhat less than indicated by the laboratory testing <br />:e the waste rock pile will be exposed to the atmosphere where <br />evaporation will take place from the surfaces of the pile. <br />