MONGOLIAN URANIUM DEPOSITS AND

IN SITU LEACHING

U.Ganbaatar, Specialist of NEA, Mongolia

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MONGOLIA HAS A POLICY TO USE ECONOMY EFFICIENT AND LOW COST NUCLEAR ENERGY WITH HARMLESS TECHNOLOGY TO HUMAN HEALTH, ECOLOGICALLY CLEAN AND ENVIRONMENTALLY BENEFICIAL.

CHOOSING URANIUM IN SITU LEACHING METHOD IS AN EXAMPLE OF THIS POLICY.

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MONGOLIA HAS SOME EXPERIENCE ON URANIUM EXPLORATION AND PERFORMED INTENSIVE EXPLORATION WORKS ON RADIOACTIVE MINERALS WITH PARTICIPATION OF RUSSIA IN 1970’S INITIALLY AND MONGOLIA ITSELF OR COOPERATING WITH OTHER COUNTRIES’ INVESTORS AFTER 1990’S. SEVERAL ORE DEPOSITS AND OCCURRENCES WERE DISCOVERED AS A RESULT OF VARIOUS GEOLOGICAL RESEARCHES WITH DIFFERENT SCALES IN EASTERN MONGOLIA AND GOBI REGIONS.

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Mongolian Uranium ore deposits and occurrences distribution is shown below map: Picture 1.

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There are two types of Uranium deposits were discovered so far and they are divided into two groups – volcanic and sedimentary.

Picture 2.

AS FOR THE DEPOSITS, THREE OF THEM CAN BE NAMED FROM EASTERN PART OF MONGOLIA – DORNOD, MARDAI AND GURVANBULAG, WHICH WERE USED BY RUSSIANS AND NOW THEY ARE BEING REHABILITATED. IN RUSSIAN TIMES, THEY WERE MINED BY OPEN PIT AND UNDERGROUND AND THE ORE WAS TRANSPORTED TO PRIARGUN, RUSSIA BY TRAIN FOR ENRICHING.THE THREE DEPOSITS ORE RESOURCES ARE NOW ON RECALCULATING PROCESS AND THE LICENSES OF THE TWO ARE SUSPENDED. SO, THEIR CURRENT ACTIVITY IS INACTIVE FOR THE MOMENT.

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IN GOBI ZONE, COGEGOBI, A BRANCH OF AREVA, THE FRENCH COMPANY IS RUNNING DULAAN UUL PROJECT AND THE FINAL RESOURCE ESTIMATION IS NOT RELEASED YET BUT ONLY THE PRELIMINARY PROGNOSIS.THIS DEPOSIT IS ROLL FRONT TYPE AND ITS MINERALIZATION HAS THE PLEASANT CAPABILITY OF IN SITU LEACHING ENRICHMENT METHOD. COARSE GRAINED EVEN SAND BED, CONTINUOUSLY DISTRIBUTED MINERALIZATION, SUITABLE EVEN EQUALITY, WELL STUDIED WATER LAYERS IN ONE THICKNESS AND ISOLATED BY HYDROGEOLOGICAL IMPERMEABLE BED ARE THE IMPORTANT INDICATORS OF IN SITU LEACHING TEST TO VERIFY THE PROPOSAL.NOW THE BEGINNING OF IN SITU LEACHING OR PREPARATION WORK OF THE TEST HAS STARTED. 7

ISR TECHNOLOGICAL METHOD IS WIDELY USED IN SANDSTONE TYPE DEPOSITS AROUND THE WORLD. THE METHOD HAS THE MINIMUM HARMFUL EFFECT TO THE ENVIRONMENT AND IS THE MOST INEXPENSIVE MINING METHOD. THIS IS ALSO ECONOMICALLY EFFECTIVE FOR SMALL GRADE DEPOSITS.THE UMNUT /SOUTHERN/ AREA WAS SELECTED TO PERFORM TECHNOLOGICAL TEST USING THIS METHOD ON THE MINERALIZED PART THAT CAN REPRESENT ALL MINERALIZATION OF DULAAN UUL PROJECT WHICH HAS BEEN DISCOVERED BY MANY YEARS OF EXPLORATION WORK.

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PROJECT LOCATION MAP Picture 3.

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ALL NECESSARY INFORMATION WAS ACQUIRED BY HYDROGEOLOGICAL SURVEY AND CORE LEACHING TESTS IN A LABORATORY AND WAS DECIDED TO CONTINUE TO THE TECHNOLOGICAL TEST.THE HOST ROCK WAS DETERMINED BY HYDRODYNAMIC STUDY WITH HIGH PERMEABLE CHARACTERISTIC AND ACTIVE POROSITY CONTAINING HIGH URANIUM MINERALIZED WATER WITH ALKALIC COMPOSITION THAT DETERMINED BY HYDROCHEMICAL ASSAY. LABORATORY LEACHING TEST RESULT INDICATES THAT THE WATER LEACHING CAPABILITY WAS 95% OR RAPIDLY IN SULPHURIC ACIDIC ENVIRONMENT.

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LOCATION OF ISL TECHNOLOGICAL TEST SITE – UMNUT –SW ZONETECHNOLOGICAL TEST METHOD – ISLPURPOSE OF ISL TECHNOLOGICAL TEST – VERIFY INDICATEDORE MINERALIZATION, DETERMINE EQUIPMENTS TO USE ORE AND FEASIBILITY STUDY OF DULAAN UUL PROJECT.TECHNOLOGICAL TEST PHASES AND PERIODSPREPARATION PHASE OF TECHNOLOGICAL TEST – 12 MONTHS

FROM 2009 SEPTEMBER TO 2010 SEPTEMBERTIME TO PERFORM ISL TECHNOLOGICAL TESTISL TECHNOLOGICAL TEST PERIOD – 8 MONTHS

FROM 2010 SEPTEMBER TO 2011 APRIL

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PHASES TO PERFORM ISL TECHNOLOGICAL TEST THE TECHNOLOGICAL TEST TO PUMP URANIUM FROM MINERALIZED ZONE CONSISTS OF TWO MAIN PARTS: PREPARE ORE AND PROCESS IT FOR THE FINAL PRODUCT.MAIN PURPOSE OF THE TEST IS TO DETERMINE COMPATIBILITY OF THE CONDITION OF MINING TECHNOLOGY AND AMOUNT AND CAPACITY OF URANIUM TO EXTRACT. IN CASE OF CONSTRUCTING MINING AND PROCESSING PLANTS DEPENDING ON THE RESULT OF THE TEST, THE PREPARED AND STORED PRODUCT WILL BE PROCESSED TO ENRICHMENT (75% OF URANIUM).START THE ISL TECHNOLOGICAL TEST - 2010 SEPTEMBERTIME TO START TO MONITOR UNDERGROUND WATER ENVIRONMENT AFFECT AND TEST PROGRESS

- 2010 SEPTEMBERTIME TO FINISH - 2012RESOURCE ESTIMATION WORK DURING ISL TECHNOLOGICAL TEST - 2010 DECEMBER

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GENERAL INFORMATION ON ISL TECHNOLOGICAL TESTNUMBER OF DAYS TO RUN TEST 224 DAYSHOURS TO WORK PER DAY 24 HOURSPERCENT OF CONTINUOUS WORK 95%ACTUAL HOURS OF ACTIVITY 5109 HOURSRECOVERYLEACHING PERCENT 80.0%ABSORBING PERCENT 94.4%AMOUNT OF URANIUM EXTRACTION 75.5%EXTRACTION AMOUNT OF URANIUM AMOUNT OF URANIUM EXTRACTION 4060KGAMOUNT OF EXTRACTION PER DAY, APPROXIMATELY 18,1 KG/DAYMAXIMUM: 108,0 KG/DAYAMOUNT OF EXTRACTION PER HOUR, APPROXIMATELY 0,8 КГ/ DAYMAXIMUM: 4,5 КГ/ DAY

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ISL TECHNOLOGICAL TEST MAIN CHARACTERISTICALL NECESSARY VALUES FOR THE TEST WERE DETERMINED DURING 2008 AND 2009 HYDROGEOLOGICAL WORKS.

HYDROGEOLOGICAL CAMPAIGN OF 2008 AND 2009 FOR THE TEST SPECIFICATIONS OF BED – 2 MINERALIZED LAYER:

PERMEABILITY CHARACTERISTIC - 1,4Х10-4 M/SKINEMATIC POROSITY ~ 15%URANIUM GRADE 200PPM, WITH LOW CARBONATIZATION(AVERAGE 0.16%; MAXIMUM 1.7%)LEACHING CAPACITY IN SULPHURIC ACIDIC ENVIRONMENT

– 95% (WHEN PH=1.5)

MINERALIZATIONACTUAL DENSITY OF SOLID 2.7

TN/M3

AVERAGE KINEMATIC POROSITY 15%PERMEABILITY 1,4Х10-4 M/SGROUNDWATER TEMPERATURE 110C

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THICKNESS OF MINERALIZED BED 10MMINERALIZATION INTERVAL 106M –116MAVERAGE ORE GRADE 0,200 ‰

TEST GRIDGRID NUMBER 2GRID TYPE HEXAGONAL AND PARALLELGRIDDING 15MNUMBER OF INPUT HOLES 10NUMBER OF OUTPUT HOLES 2DISTANCE BETWEEN INPUT AND OUTPUT HOLES 15MGEOMETRIC AREA OF EACH GRID 585 M2

GEOMETRIC VOLUME OF EACH GRID 866 M3

ORE SIZE /1 GRID (BY GEOMETRIC CONTOUR) 13445 TNORE SIZE /1 GRID (BY HYDROGEOLOGICAL CONTOUR) 50674 TNURANIUM SIZE /1 GRID (BY GEOMETRIC CONTOUR) 2689 KGORE SIZE (BY GEOMETRIC CONTOUR) 26890 TNORE SIZE (BY HYDROGEOLOGICAL CONTOUR) 101349 TNURANIUM SIZE (BY GEOMETRIC CONTOUR) 5378 KG

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LEACHING PARAMETERSPHYSICAL-CHEMICAL CHARACTERISTICS OF

GROUNDWATERDENSITY 1,002DYNAMIC STICKING CHARACTERISTIC 1,5 CPTEMPERATURE 110СWATER PH 7.6-7.9WATER EH 12 MV

CHEMICAL COMPONENTSSO4 CONCENTRATION 0.4 G/LCL CONCENTRATION 0.4 G/LURANIUM CONCENTRATION 0.1 G/L TDS TOTAL SALTINESS 1.4 G/LAMOUNT OF NECESSARY ACID FOR THE ORE 10 KG/TNAMOUNT OF NECESSARY OXIDE: PURE H2O2 300 Г/М3

LEACHING L/S 3LEACHING PERCENT 80%

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INPUT PARAMETERS:INPUT SPURT WITHIN THE GRID 7.5M3/HWELL INPUT SPURT 1.25 M3/HINPUT PRESSURE 1 BAR

ACIDIFICATION PARAMETER:MAXIMUM ACIDIFICATION OF INPUT SOLUTION 20GR/LMAXIMUM AMOUNT OF NECESSARY ACID 300KG/H

OXIDATION PARAMETER:CHEMICAL ASSOCIATION OF OXIDE H2O2CONCENTRATION 50%NECESSARY AMOUNT OF H2O2 0.6 KG/M3

OUTPUT PARAMETEROUTPUT SPURT WITHIN THE GRID 7.5 M3/HTOTAL OUTPUT SPURT 15 M3/HOUTPUT / INPUT SPURT RATIO 1OUTPUT SOLUTION PH 1.5FREE ACIDIFICATION OF OUTPUT SOLUTION 4GR/L

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OUTPUT SOLUTION VOLUME 80670 M3

AVERAGE URANIUM GRADE OF OUTPUT SOLUTION53MG/L

MAXIMUM URANIUM GRADE 300MG/L

ABSORBING PARAMETERRESIN TYPE WITH STRONG ANION INTERCHANGEAVERAGE GRAIN SIZE 550 µMVISIBLE DENSITY 0.7ACTUAL DENSITY 1.1POROSITY 36%ABSORBING UNIT LOSS 0.02 BAR/M. M/HSPECIAL SPURT 10 BV/HRESIN CONSUMPTION AMOUNT 40 GR/LRESIN GRADE IN WASTE 3MG/LABSORBING PERCENT 94.4 %

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WELLS WILL BE LOCATED AT THE CENTER OF THE MINERALIZATION BASING ON THE INFORMATION OF HYDROGEOLOGICAL AND CORE LEACHING TESTS AS SHOWN ON HERE.ISL TEST WILL BE DONE USING 10 INPUT WELLS AND 2 OUTPUT WELLS ON 2 ADJACENT HEXAGON GRIDS.

Picture 4. Well locations of ISL technological test

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THE TWO 130M DEEP OUTPUT WELLS LOCATED AT THE CENTERS OF EACH ADJACENT HEXAGONAL GRIDS WILL CROSS THE CENTER OF THE MINERALIZATION. MINERALIZATION DEEPNESS IS APPROXIMATELY 110M AND ABOUT 10M THICK.

Picture 5. Target mineralized layer of the ISL technological test

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THE TEST WILL BE DONE ACCORDING TO SCHEME OF ISL TECHNOLOGICAL TEST SHOWN ON PICTURE 5. AS SHOWN ON THE PICTURE, ACIDIC SOLUTION WILL BE PUT INTO THE INPUT WELL AND WILL GET REACTED WITH THE URANIUM. AFTER PUMPING OUT THE URANIUM ENRICHED SOLUTION THROUGH THE OUTPUT WELL THE URANIUM ORE WILL GET ACCUMULATED AT THE RESIN BAR. THE ACCUMULATED URANIUM WILL BE STORED WITH THE RESIN BAR. IN CASE OF CONSTRUCTING MINING AND PROCESSING PLANTS DEPENDING ON THE RESULT OF THE TEST, THE PREPARED AND STORED PRODUCT WILL BE PROCESSED TO ENRICHMENT (75% OF URANIUM).TEST MANAGER, CONTROLLING OPERATOR AND CHEMIST WILL MONITOR THE TEST ACTIVITY AND AFFECTS TO THE ENVIRONMENT AND GROUNDWATER EVERYDAY. THE SOLUTIONS PUT IN AND OUT WILL BE MONITORED WITH THE HELP CONTROL PANEL AND NECESSARY ASSAYS WILL BE DONE IN THE LABORATORY.

22PICTURE-6. DIAGRAM OF ISL TECHNOLOGICAL TEST

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7 MONITORING WELLS WITH DIFFERENT DEEPS WILL BE DRILLED THERE AROUND THE TEST AREA OR IN AND OUT OF BOTH HEXAGONAL GRID (PICTURE …) TO MONITOR IF THERE IS ANY AFFECT TO WATER ENVIRONMENT OR GROUNDWATER BY MEASURING AND ANALYZING HYDRODYNAMIC AND HYDROCHEMICAL INDICATORS AND MAKE A CONTROLLING NETWORK TO MONITOR WATER LAYER IN THE MINERALIZED ZONE AND OTHER WATER LAYER FROM ABOVE AND BELOW. BESIDES THAT, MONITORING WELLS WILL HELP TO DETERMINE NECESSARY WORK MEASUREMENTS OF THE WELLS.WATER ENVIRONMENT UNDERGROUND MONITORING WILL BE DONE NOT ONLY DURING THE TEST PERIOD BUT ALSO AFTER THE TEST UNTIL IT BECOMES BACK ITS INITIAL ENVIRONMENT. 4 MONITORING WELLS WILL BE USED FOR THIS PURPOSE.PZ1 AND PZ5 MONITORING WELLS BE USED TO MONITOR INTERNAL FLOW OFTHE 50M THICK LAYER INSIDE THE BED-2 TEST GRID. THEIR DEEPNESS WILL BE 130M SAME AS THE INPUT AND OUTPUT WELLS.PZ6 WELL WILL BE USED TO MONITOR THE UPPER PART OF INTERNAL FLOW, WHICH IS THE ENVIRONMENT OF BED-3.PZ7 MONITORING WELL WILL BE FOR MONITORING THE ENVIRONMENT OF BED-1.PZ3 AND PZ4 WELLS WILL BE USED TO MONITOR THE TEST PROGRESS AND TOEVALUATE HYDRODYNAMIC (PENETRATION ETC.). ALSO THEY WILL MONITORTHE UPPER PART OF BED-2.PZ2 MONITORING WELL LOCATED BETWEEN P1 INPUT WELL AND I5 OUTPUT WELL WILL BE USED FOR MONITORING FOOT PART OF THE BED-2.

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PICTURE 7. DEEPNESS OF MONITORING WELLS

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HERE IS THE BRIEF COMBINED RESULT OF IN SITU LEACHING ENRICHMENT TEST DONE IN 1994 AND 1996 AT KHARAAT DEPOSIT AND A TECHNOLOGICAL TEST RESULT OF KHAIRKHAN DEPOSIT DONE IN 1998, DUNDGOBI PROVINCE, MONGOLIA.GEOTECHNOLOGICAL TEST

TIME CONTINUED - 73 DAYSWORK SOLUTION - WEAK SOLUTION OF SULPHURIC ACIDOUTPUT SPURT - 1.6-2.4 M3/H INPUT SPURT - 0.3-0.48 M3/HAVERAGE URANIUM GRADE IN EFFECTIVE SOLUTION - 80MG/LOXIDIZER - HYDROXIDE

TEST DONE ON 2 WELLS OF WATERED ORE BODY PV-94VTHE RESULT OF TEST (WHEN L:S=1) DONE ON PV-94V AREA WAS SIMILAR TO THE IN SITU LEACHING OBJECTS IN MIDDLE ASIAN COUNTRIES AND RUSSIA.MAXIMUM URANIUM GRADE IN EFFECTIVE SOLUTION WAS 165MG/L AND TESTAVERAGE WAS 80MG/L.DEFINITE ACID CONCENTRATION 15-20MG/L AND SURPLUS ACID CONCENTRATION 10G/L OR HIGHER BECAUSE ROCK REACTING PENETRATION WAS LOW.WHEN LIQUID:SOLID RATIO (L:S) CAN BE 2.5-3.0, URANIUM EXTRACTION COULD BE UP TO 70%.GEOTECHNOLOGICAL CHARACTERISTIC OF THE ORE WAS POSITIVE.

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2 WELL TEST DONE IN AERATION ZONE PV-94VTIME CONTINUED - 73 DAYSWORK SOLUTION - WEAK SOLUTION OF SULPHURIC ACIDOUTPUT SPURT - 1.6-2.4 M3/H INPUT SPURT - 0.3-0.48 M3/HAVERAGE URANIUM GRADE IN EFFECTIVE SOLUTION - 80MG/LOXIDIZER - HYDROXIDE

2 WELL TEST DONE IN AERATION ZONE PV-94V

SOLUTION PENETRATION OCCURRED BETWEEN INPUT – OUTPUT WELLS.MAIN PART OF THE SOLUTION DISTRIBUTION HELD HORIZONTALLY WHEN VERTICAL PENETRATION HAD UNEVEN CONDITION.URANIUM GRADE IN EFFECTIVE SOLUTION REACHED TO PRODUCTION STANDARD. MAXIMUM GRADE WAS 60-85MG/L.WHEN ACIDIC CONCENTRATION OF WORK SOLUTION WAS STABLE ON 15-20G/L, URANIUM GRADE IN EFFECTIVE SOLUTION REACHED TO 60-85MG/L DURING INTENSIVE LEACHING.REACTING PENETRATION WAS LOW, 30G/L ON ACIDIC CONCENTRATION OF WORK SOLUTION.WHEN RAISING ACIDIC CONCENTRATION UP TO 50G/L, IT REACTED WITH HOST ROCKS AND ACIDIC CONCENTRATION IN OUTPUT SOLUTION DIDN’T EXCEED 34G/L.

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AS ACIDIC CONCENTRATION HIGHER THAN 8G/L IN EFFECTIVE SOLUTION WILL AFFECT TO URANIUM SORPTION, CHOOSE ANION ACCURATELY. IN FUTURE, STUDY POSSIBILITY TO USE OXIDIZER.

SEMIPRODUCTION TEST DONE IN AERATION ZONE PV-96B

AREA OF FIELD - 201M2

GENERAL THICKNESS - 7.8M AVERAGE EFFECTIVE THICKNESS - 5.2MROCK SOLID MASS - 1959TNAVERAGE VALUE OF PENETRATION INDEX - 1.2M/DAYURANIUM GRADE - 0.045%GEOLOGICAL RESOURCE OF URANIUM - 881KG

SEMIPRODUCTION TEST DONE IN AERATION ZONE PV-96B

WELL DIAGRAM - HEXAGONAL SHAPEDNUMBER OF OUTPUT WELLS - 1NUMBER OF INPUT WELLS - 6NUMBER OF BARRAGE WELLS - 12

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SEMIPRODUCTION TEST DONE IN AERATION ZONE PV-96B

PICTURE 8.

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SEMIPRODUCTION TEST DONE IN AERATION ZONE PV-96B

TIME CONTINUED - 226 DAYSWORK SOLUTION - WEAK SOLUTION OF SULPHURIC ACIDOUTPUT SPURT - 0.65-0.8 M3/H INPUT SPURT - 0.3-0.8 M3/HBARRAGE WELL SPURT - 0.8-1.2 M3/HAVERAGE URANIUM GRADE IN EFFECTIVE SOLUTION - 25MG/LOXIDIZER - HYDROXIDE

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SEMIPRODUCTION TEST PV-96V

PICTURE 9.

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SEMIPRODUCTION TEST PV-96VIT CONSISTS OF A ROW OF 4 OUTPUT WELLS AND TWO ROW OF 5 INPUT OR 10 WELLS. BECAUSE OF WATER FLOW IN WATER LEVEL AND IN ORDER TO REDUCE LOOSENING OF EFFECTIVE SOLUTION ADDITIONAL 2 WELLS (2-0 AND 2-6 WELLS) WERE DRILLED. ROW SPACING WAS 10M AND WELL SPACING IN A ROW WAS 9M.MAIN CHARACTERISTICS OF PV-96V AREA:

AREA OF TEST FIELD - 860M2

AVERAGE EFFECTIVE THICKNESS - 6.87MROCK SOLID MASS - 11226TN URANIUM GRADE - 0.052%GEOLOGICAL RESOURCE - 5837KGAVERAGE VALUE OF PENETRATION INDEX - 5.2M/DAYTIME CONTINUED - 173 DAYSWORK SOLUTION - WEAK SOLUTION OF SULPHURIC ACIDOUTPUT SPURT - 21-23 M3/H INPUT SPURT - 21-23 M3/HAVERAGE URANIUM GRADE IN EFFECTIVE SOLUTION - 25MG/OXIDIZER - HYDROXIDE

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SEMIPRODUCTION TEST PV-96VTECHNOLOGICAL PARAMETERS OF TEST CONTINUED 173 DAYS, WHEN STOPPING: L:S RATIO -5.5RATIO OF 1144KG EXTRACTED URANIUM TO RESOURCE - 19.6%MAXIMUM URANIUM GRADE IN EFFECTIVE SOLUTION - 53MG/LAVERAGE URANIUM GRADE AT INITIAL TEST - 18.8MG/LROCK REACTING CAPACITY - 33.6KG/TN OXIDE SPECIFIC CONSUMPTION - 329.3KG/KG URANIUM

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GEOTECHNOLOGICAL TEST PV-98

PICTURE 10.

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GEOTECHNOLOGICAL TEST PV-98

PICTURE 11.

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GENERAL INDEXES OF THE TEST AREATEST AREA 214M2

EFFECTIVE THICKNESS OF ORE BED 6.2MAVERAGE URANIUM GRADE 0.101%AVERAGE OUTPUT 6.0 KG/M2

ROCK SOLID MASS 2206TNORE TECHNOLOGICAL RESOURCE 1283KGUNDERGROUND WATER LEVEL 4.2MWATER CONDUCTIVITY OF EFFECTIVE BED ROCK 19.8 M2/DAYAVERAGE VALUE OF PENETRATION INDEX 3.2M/DAY

GEOTECHNOLOGICAL TEST PV-98TIME CONTINUED - 90 DAYSWORK SOLUTION - WEAK SOLUTION OF SULPHURIC ACIDOUTPUT SPURT - 4.8 M3/H INPUT SPURT - 4.8 M3/HAVERAGE URANIUM GRADE IN EFFECTIVE SOLUTION - 25MG/LOXIDIZER - HYDROXIDE

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GEOTECHNOLOGICAL TEST PV-98

FOLLOWING VALUES DERIVED AT THE END OF THE TEST:LEACHED 60.86% OF URANIUM HOSTED BY TEST AREAROCK REACTING CONSUMPTION 22.5KG/TNREACTING SPECIFIC CONSUMPTION USED ON URANIUM EXTRACTION – 63.7 KG/KGURANIUM LEACHED - 780.8KGACID CONSUMPTION - 49712KGAMOUNT OF WORK SOLUTION - 10553.3 M3

AMOUNT OF EFFECTIVE SOLUTION - 10545.5 M3

L:S RATIO - 4.78

37PICTURE 12.

38PICTURE 13.

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CONCLUSION OF ABOVE TECHNOLOGICAL TESTS SAID THAT IT IS POSSIBLE TO USE IN SITU LEACHING METHOD CAN BE USED ON THOSE DEPOSITS PROVIDED A CHANCE TO USE THESE DEPOSITS.THEREFORE, STARTED PREPARATION WORKS FOR CONSTRUCTING URANIUM MINING AND PROCESSING PLANT AT KHAIRKHAN DEPOSIT AND CONVERTING INTO 3 YEARS PRE-MINING CONTRACT AND PLANNING TO START AN EXPERIMENTAL MINING IN 2011.KHAIRKHAN DEPOSIT ALLOWS TO CONDUCT IN SITU LEACHING METHOD EVEN IT HAS NOT HIGH GRADE URANIUM.IN SITU LEACHING METHOD CONSISTS OF MINING PART BY PUMPING URANIUM USING SPECIAL WELLS, LURE URANIUM INTO RESIN FROM PUMPED WATER AT ION EXCHANGER PART AT MINING SITE AND EXTRACT URANIUM FROM RESIN AT PROCESSING PLANT TO PRODUCE YELLOW CAKE.METAL RECEIVING VALUE WAS CALCULATED AS 75% PRELIMINARILY. ACCORDING TO THE CURRENT DISCOVERED RESOURCE, THE DEPOSIT MINE LIFE WILL BE 12 YEARS AND THE CURRENT RESOURCE CAN BE INCREASED.ENVIRONMENT PROTECTION WORKS ARE TAKING PLACE AROUND THE DEPOSIT ACCORDING TO THE CODES. ENVIRONMENTAL BASIC STUDY IS UNDER PROGRESS AND IN 2000 DETAILED ENVIRONMENTAL ASSESSMENT STUDY TO OBSERVE THE TEST RESULT WAS DONE. RADIATION MONITORING IS ALSO BEING DONE BY PROFESSIONAL ORGANIZATIONS EVERY YEAR.

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WITHIN THE FRAME OF POLICY IMPLEMENTING FROM MONGOLIAN GOVERNMENT, WE ARE PAYING PARTICULAR ATTENTION TO INCREASE RESOURCES OF RADIOACTIVE MINERALS AND PUT ABOVE AND OTHER DEPOSITS INTO ECONOMIC CIRCULATION.THEREFORE, MONGOLIA IS COOPERATING WITH WELL EXPERIENCED COUNTRIES AND IAEA TO PREPARE NEW PROFESSIONALS ON ISL AND ALSO TO DISSEMINATE NEW TECHNOLOGIES.