Developer s Assessment Report Project Location and Surrounding Features Job No: 350047-004 Filename: GIANT MINE October 2010 TB 1.1.1
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Developer s Assessment Report Local Study Area Job No: 350047-004 Filename: GIANT MINE October 2010 TB 3.4.2
Source: http://wiki.nwtresearch.com/getfile.aspx?file=res earchguide%2fnorthslave_map.gif Developer s Assessment Report Regional Study Area Job No: 350047-004 Filename: GIANT MINE October 2010 TB 3.4.3
Mine Ownership 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 Ventures Ltd. Falconbridge Nickel Mines Ltd. Pamour Inc. Royal Oak Mines Inc. Miramar Giant Mine Ltd. DIAND Mine Development 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 AShaft B Shaft C Shaft Official start Gravel backfill Tailings backfill Tailings & cement backfill Minewater treatment with Minewater direct discharge to Baker Cr after mill treatment Minewater treatment in ETP B1 pit tailings supernatant in ETP Open pitting operations Diversion of Baker Creek around C1 Pit Processing 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 Mercury Amalgamation Edwards Roaster No1DorrcoRoaster No.1 Cold Cottrell (1) No.2 Dorrco Roaster Hot Cottrell (1) Hot Cottrell (2) Baghouse Refurbished baghouse New emission stack Precipitation unit for tailings solution Water treatment circuit to precipitate arsenic from tailings using lime Stack emission reduction Tailings Retreatment Project (TRP) Milling discontinued due to improved baghouse operation Tailings Disposal 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 Arsenic Trioxide Disposal Surface impoundment Back Bay disposal Bow Lake impoundment (evolves to North, Central and South Ponds) NW Tailings Pond Effluent Treatment Plant (ETP) Calcine storage pond built Phase I dam reconstruction Dam upgrades to properly impound effluents Phase II dam construction NW Pond dam raise Pilot treatment study to meet effluent standards of Water License 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 Airborne Low grade ore mined to create Old production stopes Purpose built As storage chambers release arsenic trioxide storage Dust shipments to Koppers in Georgia - no emissions control Regular inspections of storage chambers begins Arsenic Related Studies Integrated t Site Remediation Plan Submitted 1945 1950 1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 Effect of arsenic fume discharge Literature search for better dust disposal arsenic suppression & environmental control in mill Dust flow properties WAROX Review of closure options Pre-feasibility study of closure options Efforts to control effluents & stack emissions Dust reclamation Recovery of arsenic from baghouse flue dust Initial groundwater modelling arsenic analysis of Baker Cr, drinking water & snow arsenic trioxide upgrading project Study of temporary storage options arsenic trioxide disposal options CPHA arsenic trioxide task force report Field test to remove dust from underground VANCOUVER Developer s Assessment Report Milestones in Site Development Job No: 1CI001.013 Giant Mine Filename: Fig 4.3.1_Milestones_20100211.ppt October 2010 431 4.3.1
I ~r ~ ~ - -.,-...~ POCKET I - - V 4-4;. S OAR LAKE bc -0 tt~ti5cl FORM C4C ~tno Ut 0i_ no 4 I. - OAM21O oam2lc:c -:4. - ~ 5- c ~- ((AIUNGS) DAM 21B -. :: NORTHWEST POND DAM 22 -to. \ TRAPPER LAKE 22B 0AM12 - TIL NOS SS,nCH AREA DAMS ((Alit US) SOUTH POND OAM.K 1 (T US P C OHD POLS G TO D SETTLING POND j:cq~ stip c NORTH YELLOWKNIFE BAY DAM OR EFFLuENT POD ~ TtET (TAIL OS p T L000tion of Undergroond Arsenic Charnber or Slope Boild log Rood Footpath Fence K Consulting e~*reeswm~ Atfaires lndtholn_ Developers Assessment Report 0$ Affairs Caneta et do Nord Canada Major Site Features I 40,000 InecJteoo.: tciooi,013,0012 5 tn_c scan ranier site teoturee dog GIANT MINE I Feb 20101 432
C1 PIT B2 PIT Highway No. 4 C212 #14 #12 #11 BAKER CREEK "C" SHAFT #10 #9 BAKER area-ar1 "B" SHAFT CREEK 92153 nd area-ar2 MILL 92155 653 Roaster Complex B230 B233 B234 B208 B1 PIT B214 92151 nd B213 B212 92154 50 B236 92152 696 B235 area-ar4 area-ar3 INGRAHAM TRAIL LEGEND Chamber or Stope containing Arsenic Trioxide dust Chamber empty Backfill Pit or Fill Notes: 2.5m Contour interval 2003 Aerial survey base map. 0 25 50 75 100 125 150 Scale in Metres Vancouver B.C. GIANT MINE Developer's Assessment Report Dust Storage Chambers and Stopes 5.1.1
1F rmi 82 PIT 4 ~. 4. TS ai4*1~liel4 4 7,0 ft BAKER #1 ~. 1, - -4 ~- S 0,ft * * ~ 7 CREEK -. \ 4:: Ca. 1. I C212 Raise Buried Pipes Red dashed line 7-8230 TO SURFACE VERTiCAL RAiSE - 4 a 4 B233 81 PIT 8214 B213~ B212~. ~: If- r -ti. 8236 8234 2-08 AD DRIFT e234 RAISE TO SURFACE Oo -4 -~ 4 CHAMBER OR STOPE CONTAINiNO ARSENIC TRiOXiOE OUST EMPTY CHAMBER SURFACE DISTRIBUTION PIPE UNDEROROUNO ARSENIC DISTRIBUTION DRIFT 25 50 75 in Melres
B208 Job No: 1CI001.013.D12.06 VANCOUVER Filename: Fig 5.3.1_StopeBlock_20100913.ppt Giant Mine Nov. 2009 Developer s Assessment Report Schematic of Chamber and Stope Dimensions KYK 5.1.3
#15 (empty) #12 #11 #14 Notes: 1) Empty chamber #15 added to figure for clarity 2) Red tunnels and raises contain arsenic distribution lines or arsenic trioxide dust. VANCOUVER Developer s Assessment Report 3D View of AR1 Chambers Job No: 1CI001.013.D12.06 Filename: Fig 5.1.4-8_3D-Stopes_200901103.ppt Giant Mine Nov. 2009 KYK 5.1.4
#10 C212 #9 Note: Red tunnels and raises contain arsenic distribution lines or arsenic trioxide dust. Job No: 1CI001.013.D12.06 VANCOUVER Filename: Fig 6.4.1_Frozen Soil B1_20090831.ppt Giant Mine Nov. 2009 Developer s Assessment Report 3D View of AR2 Chambers and Stopes KYK 5.1.5
B234 B235 B233 B236 B230 Note: Red tunnels and raises contain arsenic distribution lines or arsenic trioxide dust. Job No: 1CI001.013.D12.06 VANCOUVER Filename: Fig 6.4.1_Frozen Soil B1_20090831.ppt Giant Mine Nov. 2009 Developer s Assessment Report 3D View of AR3 Chambers (without B208) KYK 5.1.6
B208 Note: Red tunnels and raises contain arsenic distribution lines or arsenic trioxide dust. Job No: 1CI001.013.D12.06 VANCOUVER Filename: Fig 6.4.1_Frozen Soil B1_20090831.ppt Giant Mine Developer s Assessment Report 3D View of Stope B208 Nov. 2009 KYK 5.1.7
B214 B213 B212 VANCOUVER Developer s Assessment Report 3D View of AR4 Stopes Job No: 1CI001.013.D12.06 Filename: Fig 6.4.1_Frozen Soil B1_20090831.ppt Giant Mine Nov. 2009 KYK 5.1.8
Legend Accessible Upper Bulkhead Non-accessible Upper Bulkhead 0 25 50 75 Scale in Metres Vancouver B.C. GIANT MINE Developer's Assessment Report Upper Bulkheads All Areas 5.1.9
Legend (Type 4) Accessible Lower Bulkhead Non-accessible Lower Bulkhead Lower Bulkhead Design Type 0 25 50 75 Scale in Metres Vancouver B.C. GIANT MINE Developer's Assessment Report Lower Bulkeads All Areas 5.1.10