This presentation was given at a meeting of the Cooperating Agencies for Rosemont Copper Project on April 1, 2009. The presentation by Rosemont was designed to give a project orientation and show the project components as presented in the Mine Plan of Operations. This presentation was given after the public scoping was complete and also highlights some adjustments Rosemont was contemplating to address those concerns.

1. Cooperating Agencies
Presentation
April 1, 2009

2. The Right People:
Rosemont Management
• Gil Clausen, President & CEO -25 years executive and operating experience in the mining industry with several
global and domestic mining companies (Stillwater, Washington Group, Placer Dome)
• Raghu Reddy, Senior Vice-President, more than 25 years of experience in the development and financing of
mining, power generation and infrastructure projects both domestically and internationally (Washington Group, Peabody
Mining, Morrison Knudsen)
• Jamie Sturgess, Vice-President, Sustainable Development– more than 25 years of industry experience in
environmental management, regulatory compliance, pollution control and project management (Cyprus Climax Metals,
EnviroNet, Stantec Consulting)
• Rod Pace, Vice-President, Operations- Bachelor of Science in Mining Engineering with more than 28 years
experience in mine development and operations – led start up of six mining operations between 1999 and 2005 with
Washington Group International.
• Lance Newman, Vice-President, Project Development– more than 20 years of concentrating, smelting &
refining operations experience (Stillwater, Gold Fields SA)
• Mark Stevens, Vice-President, Exploration- Masters in Geology with more than 27 years of experience in
resource industry (Geologist with Pincock, Allen & Hold between March 1988 and August 2006)
• Fermin Samorano, Mine Manager- Bachelor of Science in Mining Engineering with 15 years experience in mine
development and operations – 1996-2001 ASARCO, 2001-2006 with Washington Group International, 2006-2008 Corriente
Resources Inc.
• Kathy Arnold, Director of Environmental and Regulatory Affairs more than 20 years experience in
environmental management at mining operations (Asarco, Vector Arizona, Tetra Tech)

3. Who is Rosemont?
" Rosemont
Copper
Company
is
an
Arizona
Corpora1on,
that
is
wholly
owned
subsidiary
of
Augusta
Resource
Corpora1on
" Offices
are
in
Tucson
and
Denver
" Augusta
Resource
Corpora1on
traded
on
the
American
and
the
Toronto
Stock
Exchanges,
stock
symbol
AZC
" Feasibility
study
completed
in
January
2009
showed
a
$1.2
billion
aNer-­‐tax
NPV

4. Rosemont
Land Ownership
" Mining
Property:
• 132
patented
claims,
covering
just
under
2,000
acres
• 905
unpatented
claims,
covering
more
than
12,000
acres
• Other
ranchlands
covering
approximately
800
acres
" Ranching
Property:
• Private
ranchland
property
covering
approximately
800
acres
(unpatented
mining
claims
cover
some
of
the
ranchlands)
• Grazing
leases
for
30,000
acres

5. Why Here? Schematic Sectional View
Willow Ca
n yon Fm.
Rosemont Glance Cong.
Deposit Rain Valle
Concha L
y Fm.
s.
Scherrer
Fm.
Epitaph L
s.
Colina Ls
.
Earp Fm.
Laramide Horquilla
Fm.
QLP Intrusive Escabros
M
Abrigo artin a Ls.
(Mineral Center)
Bolsa QuFm.
Fa .
mrtzite
PreCamb
ria
Granodio n
rite

6. History and Ownership
Helvetia and Rosemont Mining District
" Congress
recognizes
Helve1a
and
Rosemont
Mining
Districts
-­‐
1880
" Southern
Arizona
led
the
na1on’s
copper
produc1on
-­‐
1900
" Rosemont
District
mined
-­‐
1870
through
1950
" First
mining
claims:
• Narraganse_,
1879
• Eclipse,
1884
• Backbone,
1885
" Recent
History:
• Banner
Mining
Company,
1961
Old
Rosemont,
ca.
1900
Store
and
warehouse,
center;
• Anamax,
1973
-­‐
1986
Rosemont
Hotel,
right.
• Asarco,
1988
-­‐
2004
• Rosemont
Copper,
2005

7. Rosemont Hotel, ca. 1906

8. Mine Plan of Operations
" Rosemont
Copper
submi_ed
a
Mine
Plan
of
Opera1ons
to
the
US
Forest
Service
on
July
11,
2007.
" The
MPO
includes
the
Rosemont
Copper
project
progressive
design,
conserva1on,
and
sustainability
ini1a1ves.
" The
MPO
consists
of
several
documents:
• The
Mine
Plan
of
Opera1ons
• The
Infrastructure
Plan
• The
Reclama1on
Plan
• Addi1onal
Informa1on
requested
by
the
Forest
Service
" Forest
Service
declares
complete
in
October
2007
and
determines
NEPA
requires
an
EIS

9. Other Permits
" Current
Opera1ons:
• Forest
Service
–
Drilling
Plan
of
Opera1ons
• State
of
Arizona,
ADWR
–
Well
Drilling
Permits
• State
of
Arizona,
ADEQ
–
Construc1on
Stormwater
General
Permit
• State
of
Arizona,
ADEQ
–
DeMinimis
Discharge
Permit
AZPDES
Program
• State
of
Arizona
,
ADWR
–
Groundwater
Withdrawal
Permit
• State
of
Arizona,
Department
of
Agriculture
–
Land
Clearing
Permit/No1fica1on
• Pima
County
–
Air
Ac1vity
Permit
• Pima
County
–
Grading
Permit
• Pima
County
–
Business
License/Occupancy
Permit
" Permit
Applica1ons
submi_ed:
• Arizona
State
Mine
Inspector’s
Office
–
Arizona
Mined
Land
Reclama1on
Plan
• Forest
Service
–
Mine
Plan
of
Opera1ons
" Permit
Applica1ons
in
process:
• Army
Corps
of
Engineers
–
Preliminary
Jurisdic1onal
Delinea1on
• State
of
Arizona,
ADEQ
–
Aquifer
Protec1on
Permit
• Pima
County
–
Air
Quality
Permit
" Addi1onal
approvals
needed
before
opera1ons

10. Rosemont Project Schedule
2005 2006 2007 2008 2009 2010 2015 2020 2030 2040
Exploration
Feasibility
Design
Permits
Operation
Closure
Milestones:
1. Preliminary Assessment and Economic Evaluation Completed, June 2006
2. Mine Plan of Operations submitted to U.S. Forest Service, July 2007
3. EIS Process Starts, March 2008
4. EPCM Design Awarded to M3, April 2008
5. Feasibility Update, January 2009
6. APP Application submitted to ADEQ, Feb 2009

11. Mine Planning Update

12. Drilling at Rosemont
Drill
Holes
Company
Time
Period
Number
Feet
Banner
1950s-­‐1963
3
4,226
Anaconda
1963-­‐1973
113
136,728
Anamax
1973-­‐1988
52
54,350
ASARCO
1988-­‐1998
11
14,695
Augusta
2005-­‐2008
75
113,876
Total
254
323,875
During the 2007-2008 drilling program Augusta completed a 20-hole, 17,522 foot
diamond drilling program, along with the sampling of 10 previously drilled
geotechnical holes.

13. Rosemont Mineral Reserves
Classification Sulfide Reserves Oxide Reserves
Short Tons % Cu % Mo Ag oz/t Short Tons % Cu
(thousands) (thousands)
Proven
141,999
0.48
0.015
0.13
16,250
0.18
Probable
404,339
0.45
0.015
0.11
53,724
0.17
Total
546,338
0.45
0.015
0.012
69,974
0.17
Proven reserves: ore in place for which the tonnage, grade and shape have been computed from dimensions revealed
in outcrops, trenches, underground workings or drill holes. The grade is then calculated from results of adequate
sampling to a high degree of confidence.
Probable reserves: ore in place for which tonnage and grade are calculated partly from specific measurements,
samples or production data and partly from projection for a reasonable distance on geological evidence and for which
the sites available for inspection, measurement and sampling are too widely or otherwise inappropriately spaced to
outline the orebody completely or establish its grade throughout.
Reserves
are
updated
from
the
Feasibility
Study
issued
January
2009

14. Yearly Production
Yearly Average Metal Production
Copper (Cu) Molybdenum (Mo) Silver (Ag) Gold (Au)
Pounds Pounds Ounces Ounces
(000) (000) (000) (000)
Cu Concentrate 204,000 2,490 15
Mo Concentrate 4,700
Cu Cathode 20,000

15. Reserve Comparison
2007 F.S. 2008 Mine Reserve Difference Diff.
Ktons Ktons Ktons %
Sulfide Ore 492,725 546,340 53,615 11%
Oxide Ore 49,447 69,974 20,527 42%
Waste 1,288,425 1,231,516 -56,909 -4%
Total Material 1,830,597 1,847,830 17,233 1%

16. Basic Mine Planning Philosophy
Sustainability Initiative
"
Sustainable
Water
Supply
"
Concurrent
Reclama1on
"
Scenic
Value
Recogni1on
"
Sonoran
Desert
Conserva1on
Plan

17. Year -1 Q1 Pre-Production

18. Year 1 of Production

19. Year 5 of Production

20. Year 10 of Production

21. Year 15 of Production

22. End of Production

23. Bucyrus 100 Ton Electric Shovel

24. 250 – 360 Ton Haul Trucks
• Manufacturers ( with support in local area)
– Caterpillar
– Komatsu

25. Sustainability Initiatives

26. Operational Necessities
Sustainability Initiative
"
Sustainable
Water
Supply
Replace
what
we
take
and
protect
what
is
there
"
Concurrent
Reclama1on
Reclama1on
starts
the
first
year
of
opera1on
"
Scenic
Value
Recogni1on
Perimeter
bu_ress
and
reclama1on
shield
opera1ons
from
view
"
Sonoran
Desert
Protec1on
Plan
Facility
designs
and
placement
recognize
biological
core
"
Community
Endowment
$25
million
permanent
endowment
and
$500,000
annual

27. Water Supply
Pipeline and Recharge
" Rosemont
will
pump
water
approximately
22
miles
to
the
opera1ons
site
" Rosemont
has
permits
to
annually
withdraw
6,000
ac-­‐N
of
water
for
20
years
" Rosemont
has
commi_ed
to
recharging
5%
more
CAP
water
than
is
used
" Rosemont
has
recharged
30,000
ac-­‐N
of
water
already
with
commitments
in
place
Pipeline
OrientaKons
for
15,000
more
during
2009

28. Water Comparison Chart
Agriculture 32,258
FMI
-­‐
Sierrita
29,171
Municipal* 19,807
Asarco
7,237
Rosemont
(permitted) 6,000
-­‐ 10,000 20,000 30,000 40,000
Average annual pumping 2001-2006
Municipal includes Twin Buttes. ac-­‐ft/yr

29. Well Protection Program
" Rosemont
has
commi_ed
to
work
with
the
Sahuarita
Well
Owners
Group
to
provide
protec1on
for
their
private
wells
near
the
produc1on
well
loca1ons
" The
draN
agreement
provides
for
the
following:
• “No-­‐fault”
insurance
policy
to
replace
pumps
or
repair
wells
• Monitoring
of
the
aquifer
in
the
area
prior
to
and
through
the
term
of
the
Rosemont
opera1ons
• Deepening
or
redrilling
of
wells
to
mi1gate
any
affects
of
pumping
opera1ons
" Approximately
50
wells
are
covered
by
this
program

30. Tailings Management
" Tailings
filtered
to
reduce
moisture
to
about
16%
" Filtered
tailings
placed
using
conveyors
in
a
“dry
stack”
facility
" Perimeter
bu_ress
provides
structural
control
and
allows
concurrent
reclama1on
" Stormwater
diverted
around
the
facility
Dry
stacking
of
tailings
from
a
conveyor
at
La
Coipa,
Chile
" Reclama1on
starts
in
the
first
(Courtesy
Anglo
American/Debswana
year
of
opera1on
from
the
Tailings.info
website)

31. Reclamation Plan
" Rosemont
Reclama1on
philosophy
–
“Start
with
the
end
in
mind”
" Material
will
be
placed
at
3:1
slopes
" Ridge
and
valley
method
that
approximates
natural
terrain
will
be
used
to
minimize
erosion
" Reclama1on
starts
in
the
first
year
of
opera1on
" University
of
Arizona
Tes1ng:
• Na1ve
plants
were
tested
at
the
University
of
Arizona
greenhouses
–
results
–
i.e.
seed
mixes
and
applica1ons
–
tested
in
the
field
in
larger
test
plots.
• 200
agaves
from
Rosemont
are
being
studied
at
the
greenhouses
and
will
provide
nursery
stock
for
replan1ng
during
opera1ons
(Important
for
Lesser
Long-­‐nosed
Bat)

32. Greenhouse Testing
Arkose
Glance
3
soil
types
X
3
rainfall
scenarios
X
3
amendments
X
4
seed
mixes
=
108
treatment
combina1ons
Gila
108
X
4
replica1ons
=
432
pots

33. Greenhouse Results
" There
are
species
sufficient
to
establish
a
rich
produc1ve
na1ve
plant
community
on
these
materials.
" Some
establishment
occurs
even
in
low
rainfall.
" Soils
vary
in
produc1vity,
Arkose
supports
limited
richness
and
produc1vity.
" Straw
aided
community
produc1vity.

34. Viewshed Protection
" Year
10
view
from
Hwy
83
pullout
near
Milepost
44
" Screening
berm
and
reclama1on
started
in
year
1
" Ridgeline
leN
untouched
" U1lizing
the
smallest
footprint
available

35. Rosemont
Footprint
" Facility
outline,
approximately
4,400
acres
• 3,300
acres
Federal
• 900
acres
Private
• 200
acres
State
" Less
than
other
opera1ons

36. Operational Footprints

37. Sonoran Desert
Conservation Plan
" Biological
core
areas
avoided
" Facili1es
placed
in
one
compact
area
to
minimize
impacts
to
surrounding
area
" Viewshed
protec1on
by
perimeter
berm
" Water
diversions
so
downstream
water
flows
are
maintained
to
the
extent
prac1cable
which
will
maintain
riparian
areas

38. Rosemont Production
Annual Metal
Product
Production
Copper Concentrate 220,000,000 pounds
Copper Cathode 14,000,000 pounds
Molybdenum Concentrate 5,000,000 pounds
Silver 3,500,000 ounces
Gold 15,000 ounces
Rosemont
provides
5%
of
the
copper
used
in
the
United
States
" Less
than
half
the
land
when
compared
to
other
opera1ons
with
similar
produc1on
rates
" Uses
25%
of
the
water
of
similarly
sized
opera1ons

39. Economic Stimulus
" Rosemont
Employment
(500
direct
and
up
to
1,500
indirect)
" $256
million
to
Pima
County
annually
from
direct
and
indirect
impacts
from
taxes,
personal
income,
and
business
sales
" $488
million
to
Arizona’s
economy
annually,
equivalent
to:
• 1
Super
Bowl
• 3
Gem
and
Mineral
Shows
• 10
Baseball
Spring
Training
Seasons
" $164
million
to
the
Federal
Government
annually
" Original
investment
approximately
$1
billion
dollars,
es1mated
annual
business
sales
total
$1.5
billion,
and
personal
income
grows
$520
million
annually

40. Current Economic Impact
Local Firms
" Rosemont
currently
is
using
a
number
of
local
firms
for
engineering
and
other
por1ons
of
the
project
" These
firms
employ
hundreds
of
people.
" Some
of
those
firms
include:
• M3
Engineering
• DM
Engineering
• Securitas
• Mountain
States
R&D
• SkylineLabs
• Verizon
Interna1onal
• Securitas
• Tetra
Tech
• Western
Refining
• AMEC
• Stantec
• Fedex-­‐Kinkos
• WestLand
Resources
• Cooper
Aerial
• Alphagraphics
• Applied
Environmental
• Verdad
Group,
L.L.C.
• Southwest
Explora1on
Consul1ng
• Applied
Environmental
Services
• E.L.
Montgomery
and
Consul1ng
• Turner
Laboratories
Associates
• Mountain
View
Tours
• Reprographics
• Strongpoint
Public
Rela1ons
• Old
El
Paso
Barbecue
• Physical
Resource
• Fennemore
Craig,
PC
• Bonesteel
Consultants
Laboratories
• Sonoran
Pump
Supply
• Navigant
• Metcon
• Darling
Environmental/Survey
• University
of
Arizona
• Boart
Longyear
• Call
and
Nicholas
• Geomechanics
Southwest
• Lang
Drilling
• Layne
Drilling
• Zonge
Geosciences,
Inc.
• DM
Engineering

41. Community Involvement Activities
" Ac1ve
community
involvement
program
for
local
chari1es
and
ac1vi1es.
" Corporate
contribu1ons
support
educa1on,
extrac1ve
industries,
community
service,
or
involve
areas
around
our
site
of
opera1on
" During
opera1ons,
$25
million
endowment
plus
annual
dona1on
of
$500,000
" Examples
include:
• The
Arizona
Trail
• El
Tour
de
Tucson
• University
of
Arizona
Athle1cs
• Arizona
Ca_le
Growers
• The
University
of
Arizona
• Tucson
Hispanic
Chamber
College
of
Engineering
• Tucson
Metro
Chamber
• Arizona
Geological
Society
• Rocky
Mountain
Elk
Founda1on
• Green
Valley/Sahuarita
• Arizona
Hydrogeological
Society
• Tucson
SME
Chapter
Chamber
of
Commerce
• So.
Arizona
Environmental
• Chicanos
Por
La
Causa
• Arizona
Mining
Associa1on
Managers
Society
(SAEMS)
• Arizona
Opera
• Greater
Green
Valley
• Greater
Tucson
Leadership
• Tucson
Rough
Riders
Community
Founda1on
Council
(GTL)
• SME
Diggers
&
Duffers
Golf
• Tucson
Regional
Economic
• Casa
de
Los
Ninos
Tournament
Opportuni1es
• Arizona
Opera
• Tucson
Gem
&
Mineral
Show
• Green
Valley
Rotary
• Arizona
Theater
Company
• Community
Water
Company
• Volunteer
Center
of
So.
Arizona
• Tucson
Rodeo
• Sahuarita
Rage
ASA
Fastpitch
• Arizona-­‐Mexico
Commission
• Key
to
Employment
21st
Century
• Teachers
Wish
List
• AMIGOS
•
Boys
and
Girls
Club
• Community
Food
Bank
• Metropolitan
Pima
Alliance
• Pima
Community
College
• Tucson
Alliance
for
Au1sm
• Steele
Children’s
Research
• Foster
Care
Review
Board

42. Questions?
WWW.ROSEMONTCOPPER.COM