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RECEIVED <br />Results and discussion: <br />FEB 2 7 2001 <br />Division of Keclamation, <br />Mining and Safety <br />Tests were performed on three samples of ore, two samples of overburden, a <br />blank, and a sample of pyrite ore obtained from the Mary Murphy Mine in Colorado. <br />Sample Paste Neutralization Acid Producing Comments <br /> Test(pH) Potential (mole Potential <br /> H+/100Kgj (CaCO3/t000 <br /> tons <br />Ore Sample 7.4 30.1 <0.1 (APP)- pH <br />1 after <br /> washing=7.1, <br /> adding 309K <br /> H202 <br /> produced no <br /> reaction; see <br /> note 1 <br />Ore Sample 7.2 28.6 <0.1 See above <br />2 <br />Ore Sample 7.4 31 <0.1 See above <br />3 <br />Overburden 7.5 33 <0.1 See above <br />Sam le 1 <br />Overburden 7.4 32.6 <0.1 See above <br />Sam le 2 <br />Blank 7.0 0 0 <br />Known 3.1 0 107 (APP)- PH <br />Sulfide after <br /> washing=2.5, <br /> adding 30% <br /> H202 <br /> produced <br /> vigorous <br /> exothermic <br /> rxn; see note <br /> 2 <br />Note 1: No acid producing materials (i.e. sulfides) have been found at The Steel <br />Rose Mine to date. !n the APP test, introduction of 30% Hydrogen Peroxide <br />resulted in no reaction other than creating an oxidizing solution in all mine <br />samples; oxidizing character persisted after 24 hrs. heating. <br />Note 2: In the APP test, addition of H2O2 produced an immediate, vigorous and <br />exothermic reaction; in addition the oxidizing character of the solution <br />disappeared after cooling. <br />