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• • • <br />Project: Cripple Creek Hydrogeochemistry Date: 4/8/2008 <br />Task: Neutralization of Pyrite Oxidation Products Page 1-1 <br />NEUTRALIZATION TEST FOR HCT LEACHATES <br />- - --- ----- -------- ---- <br /> <br />INTRODUCTION - <br />This memorandum sets out the testing program to be conducted on existing and new samples from the Cri pple Creek Mining District. <br /> <br />SAMPLES PROVIDED_ <br />The following samples have been dis atched to Vizon SciTek b CC&V for use in the testing pro gram: <br />Description Drill Hole From <br />(ft) To <br />ft Mass <br />k <br /> CG96-72 158 160 2.4 <br />South Cresson (High Sulfur) CG97-75 298 300 2.3 <br /> CG97-75 357 360 3.8 <br />Squaw Gulch (High Carbonate) UGC-97-5 2505 2640 -4 <br />Cresson Pipe (High Carbonate) CC-2272 3650 3965 --2 <br /> CC-2273 4046 4408 -2 <br /> <br />SAMPLE PREPARATION <br />South Cresson <br />1. Mix all of the three South Cresson samples together. <br />2. Crush entire sample to 1" maximum. <br />_3. Withdraw 4 kg aliquot for HCT (Coarse) testing. <br />4. Crush remaining sample to 1/4" maximum. <br />5. Withdraw 1 kg aliquot for HCT (Standard) testing. <br />6. Withdraw 1 kg aliquot to prepare mixed South Cresson and Cresson Pipe material. <br />7. Withdraw 1 kg aliquot to prepare mixed South Cresson and Squaw Gulch material. <br />___ <br />IK Crush 1 kg of remaining material to 200 mesh - <br />9. Withdraw aliquots for tests and analyses specified bel ow <br />a. Sobek HCT test <br />b. NAG test. <br />c. Total metals. <br />d. ABA characteristics. <br />e. Leco Sulfur and Carbo n. <br /> <br /> <br /> <br /> <br /> <br />Adrian Brown Consultants, Inc.