ERM 09/11

Project No.Date:Drawn By:GIS File: 012045009/06/11T. Cota

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0 800 1,600400

Feet

p

LEGENDAmerican Eagle/Deep Portland PitRoadsStreamsJuno_Foley_POPMining Permit Boundary

Revised Summary of Spent Ore and Barren Rock DisposalUsed in Geochemical Models

American Eagle/Deep Portland PitWharf Mine

Wharf Resources10928 Wharf Road

Lead, South Dakota

Figure 1SOURCE: Base map provided by Wharf Resources (U.S.A), Inc., May 2008.

36

25

35

26

False

Botto

mCree

k

False

Botto

mCre

ek

Trojan RockFacility

Bald MountainReclaimed Tailings

Trojan Pit

CleopatraCreek

FoleyPit

Cleopatra

PortlandPit

Notes:1 Includes portions of barren rock previously deposited in Cleopatra Creek Rock Facility and Trojan Pit2 Includes portions of barren rock previously deposited in Portland Pit, Deep Portland Pit and Trojan Pit

TrojanBackfill

2 1

Deep PortlandPit

Creek25,911,031 Tons

Barren Rock1

35,782,459 TonsBarren Rock2

30,000,000 TonsSpent Ore

55,137,845 Tons Barren RockNew - 23,000,000 Tons

Existing - 32,137,845 Tons

ERM 09/11

Project No.Date:Drawn By:GIS File: 012045009/06/11T. Cota

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MW-43MW-42

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MW-40MW-37

Joseph Well

Horse Shoe MW

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810

1214

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84

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1416

FB-2FB-1

War Eagle

False Bottom Spring

Compliance Point 007

Compliance Point 004

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0 900 1,800450

Feet

p

LEGENDNitrate Concentration (mg/L) - Year 2040Spent Ore Disposal AreaAmerican Eagle/Deep Portland Pit

@A Monitoring Well!> Surface Water Monitoring Station

RoadsStreamsWharf Land OwnershipMining Permit Boundary

Revised Nitrate Concentration Solution - Year 2020Precambrian Bedrock (Layer 5)

Wharf MineWharf Resources

10928 Wharf RoadLead, South Dakota

Figure 2SOURCE: Base map provided by Wharf Resources (U.S.A), Inc., May 2008.

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26 25

False

Botto

mCr

eek

False

Botto

mCree

kTrojan Rock

Facility

Bald MountainReclaimed Tailings

DeepPortland Pit

CleopatraCreek

FoleyPit

Cleopatra Creek

PortlandPit

Trojan PitBackfill Area

Trojan Pit

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12

AMER

ICAN E

AGLE

/DE

EP PO

RTLA

ND PI

T

ERM 09/11

Project No.Date:Drawn By:GIS File: 012045009/06/11T. Cota

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MW-60

MW-59

MW-43MW-42

MW-41

MW-40MW-37

Joseph Well

Horse Shoe MW

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88

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FB-2FB-1

War Eagle

False Bottom Spring

Compliance Point 007

Compliance Point 004

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Feet

p

LEGENDNitrate Concentration (mg/L) - Year 2040Spent Ore Disposal AreaAmerican Eagle/Deep Portland Pit

@A Monitoring Well!> Surface Water Monitoring Station

RoadsStreamsWharf Land OwnershipMining Permit Boundary

Revised Nitrate Concentration Solution - Year 2040Precambrian Bedrock (Layer 5)

Wharf MineWharf Resources

10928 Wharf RoadLead, South Dakota

Figure 3SOURCE: Base map provided by Wharf Resources (U.S.A), Inc., May 2008.

35

26 25

False

Botto

mCr

eek

False

Botto

mCree

kTrojan Rock

Facility

Bald MountainReclaimed Tailings

DeepPortland Pit

CleopatraCreek

FoleyPit

Cleopatra Creek

PortlandPit

Trojan PitBackfill Area

Trojan Pit

36

12

AMER

ICAN E

AGLE

/DE

EP PO

RTLA

ND PI

T

ERM 09/11

Project No.Date:Drawn By:GIS File: 012045009/06/11T. Cota

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MW-60

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MW-43MW-42

MW-41

MW-40MW-37

Joseph Well

Horse Shoe MW

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FB-2FB-1

War Eagle

False Bottom Spring

Compliance Point 007

Compliance Point 004

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Feet

p

LEGENDNitrate Concentration (mg/L) - Year 2040Spent Ore Disposal AreaAmerican Eagle/Deep Portland Pit

@A Monitoring Well!> Surface Water Monitoring Station

RoadsStreamsWharf Land OwnershipMining Permit Boundary

Revised Nitrate Concentration Solution - Year 2060Precambrian Bedrock (Layer 5)

Wharf MineWharf Resources

10928 Wharf RoadLead, South Dakota

Figure 4SOURCE: Base map provided by Wharf Resources (U.S.A), Inc., May 2008.

35

26 25

False

Botto

mCr

eek

False

Botto

mCree

kTrojan Rock

Facility

Bald MountainReclaimed Tailings

DeepPortland Pit

CleopatraCreek

FoleyPit

Cleopatra Creek

PortlandPit

Trojan PitBackfill Area

Trojan Pit

36

12

AMER

ICAN E

AGLE

/DE

EP PO

RTLA

ND PI

T