[GRAPHIC OMITTED - IVANHOE MINES]
WORLD TRADE CENTRE                             TEL: 604-688-5755
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Vancouver-British Columbia-Canada V6C3EI       www.ivanhoemines.com
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 October 18,2006


Securities and Exchange Commission
Division of Corporation Finance
1OO F Street, N.E.
Washington, D.C. 20549

Attention:       Karl Hiller
                 Branch Chief


 RE:             IVANHOE MINES LTD.
                 Form 40-F for Fiscal Year Ended December 31, 2005
                 Filed April 5,2006
                 File No. 001-32403

Dear Mr. Hiller,

We hereby  acknowledge  receipt of the comment letter dated  September 28, 2006
(the  "Comment  Letter")  from the staff  (the  "Staff) of the  Securities  and
Exchange  Commission (the  "Commission")  concerning the above captioned Annual
Report on Form 40-F for the fiscal year ended December 31, 2005 (the "40-F").

We submit this letter in response to the Comment Letter. For ease of reference,
we have  reproduced the text of the comments in bold-face type below,  followed
by our responses. Terms used but not defined herein have the meanings set forth
in the 40-F.




Page 2 of 20


RESPONSES TO STAFF COMMENTS

FORM 40-F FOR THE FISCAL YEAR ENDED DECEMBER 31. 2005

EXHIBIT 2 - FINANCIAL STATEMENTS

CONSOLIDATED STATEMENTS OF CASH FLOWS, PAGE 59

1.   PLEASE  REVISE YOUR  CONSOLIDATED  STATEMENTS  OF CASH FLOWS TO BEGIN YOUR
     RECONCILIATION  OF CASH USED IN  OPERATING  ACTIVITIES  WITH YOUR NET LOSS
     RATHER  THAN  YOUR NET LOSS FROM  CONTINUING  OPERATIONS,  TO COMPLY  WITH
     PARAGRAPH 28 OF SFAS 95.

RESPONSE:

We are aware of the  Commission's  view that this  presentation is inconsistent
with SFAS 95, as further  described in Joel Levine's December 6, 2005 speech at
the  AICPA  conference  on SEC and  PCAOB  Current  Developments.  As such,  we
respectfully  submit  that we will  begin  our  reconciliation  of cash used in
operating  activities  with net loss  rather  than  net  loss  from  continuing
operations in our future filings.

NOTE 2- SIGNIFICANT ACCOUNTING POLICIES, PAGE 60
NOTE 2(G) - EXPLORATION AND DEVELOPMENT, PAGE 62

2.   WE NOTE YOUR  DISCLOSURE IN WHICH YOU EXPLAIN THAT YOU BEGIN  CAPITALIZING
     MINING COSTS ONCE YOU  DETERMINE A PROPERTY HAS  ECONOMICALLY  RECOVERABLE
     RESERVES.  PLEASE  EXPAND  YOUR  DISCLOSURE  TO  DISCUSS  HOW  YOU  DEFINE
     ECONOMICALLY RECOVERABLE RESERVES. NOTE THAT FOR US GAAP PURPOSES YOU MUST
     ESTABLISH  PROVEN AND  PROBABLE  RESERVES AS DEFINED BY  INDUSTRY  GUIDE 7
     PRIOR TO CAPITALIZING MINING COSTS.

     IF YOU HAVE  CLASSIFIED  RESERVE  QUANTITIES  AS PROVEN AND PROBABLE  WITH
     ENGINEERING  DATA  THAT  IS  LESS  COMPREHENSIVE  THAN  A  BANKABLE  FINAL
     FEASIBILITY  STUDY,  YOU MAY  NOT  HAVE  COLLECTED  ENGINEERING  OR  OTHER
     INFORMATION  SUFFICIENT TO ESTABLISH A COMMERCIALLY MINABLE DEPOSIT FOR US
     REPORTING PURPOSES.  UNDER THESE  CIRCUMSTANCES,  ALL COSTS RELATED TO THE
     PROPERTY WHICH ARE NOT  ACQUISITION  COSTS WOULD  ORDINARILY BE CONSIDERED
     EXPLORATION COSTS AND EXPENSES AS INCURRED.

RESPONSE:

We confirm that our  disclosure is in accordance  with US GAAP and we do follow
SEC Industry Guide 7 in  considering  whether to capitalize  mining costs..  At
December 31, 2005,  Ivanhoe Mines Ltd.  ("Ivanhoe Mines") did not have reserves
on any of the deposits at the Oyu Tolgoi project and therefore all  exploration
costs were expensed. The only


Page 3 of 20


costs  capitalized as at December 31, 2005 were those relating to machinery and
equipment and fixed assets that were purchased during the year.

On January 30, 2006, Ivanhoe Mines announced reserve estimates for the open-pit
southern  part of the Oyu  Tolgoi  project.  When this  deposit  is  developed,
Ivanhoe  Mines  Ltd.  will  commence  capitalizing  mining  costs in line  with
requirements of SEC Industry Guide 7.

Currently in 2006, all mining costs  associated  with the other deposits at Oyu
Tolgoi are being  expensed in line with SEC Industry Guide 7. When reserves are
achieved Ivanhoe Mines will then commence capitalizing mining costs.

Accordingly,  we do not believe that the requested  expanded  disclosure  would
provide   material   information  to  investors  and  users  of  the  financial
statements.


NOTE 2(K1 - REVENUE RECOGNITION, PAGE 64

3.   WE NOTE YOU  DISCLOSE  THAT YOUR  REVENUE  FROM  COPPER  CATHODE  INCLUDES
     PROVISIONAL  PRICING  ARRANGEMENTS  ACCOUNTED  FOR AS EMBEDDED  DERIVATIVE
     INSTRUMENTS  UNDER SFAS 133.  PLEASE  EXPAND  YOUR  DISCLOSURE  TO PROVIDE
     FURTHER  DETAIL AS TO THE  NATURE  OF THE  PRICING  ARRANGEMENTS  AND YOUR
     ACCOUNTING FOR THE ARRANGEMENTS AS EMBEDDED DERIVATIVES.

RESPONSE:

The Joint  Venture  sells its copper  cathode with  pricing  being based on LME
Grade - A Copper Cash  Settlement  Prices  averaged  during the second calendar
month following the contractual month of shipment.  Revenues are recorded under
these  contracts  at the time title  passes to the buyer  based on the  forward
price for the  settlement  period.  The  contract  provides  for a  provisional
payment  based upon  provisional  assays and the previous  months  quoted metal
copper  price.  We have  determined  that  these  arrangements  give rise to an
embedded derivative, represented by the modification in cash flows arising from
the change in price  during the period from the date of sale to the  settlement
period.

At December 31, 2005, Ivanhoe Mines' 50% share of the Joint Venture's "Accounts
Receivable"  balance  in the Share of Net  Assets  table on page 74 of the 40-F
includes an amount of $319,932 in relation to this embedded  derivative.  Under
FAS 133, paragraph 12, the embedded  derivative is not required to be separated
from the host  contract,  since the economic  characteristics  and risks of the
embedded  derivative  instrument is clearly and closely related to the economic
characteristics and risks of the host contract.

The revenue  recognition  policy in Note 2, page 64 of the 40-F, relates solely
to the Joint Venture in Myanmar (Note 4). As the Joint Venture is accounted for
under the equity method,  only summary  disclosure of the  provisional  pricing
arrangements was provided in the 40-F.




Page 4 of 20


In future  filings  to reflect  the Staffs  comments,  the  disclosure  will be
expanded to discuss the nature of the pricing  arrangements  and the accounting
for the arrangements as embedded derivatives.


NOTE 4 - INVESTMENT IN JOINT VENTURE, PAGE 72

4.   WE NOTE YOU  DISCLOSE  THAT  YOU HAVE A  DIFFERENCE  OF  OPINION  WITH THE
     MYANMAR TAX AUTHORITIES ON A COMMERCIAL TAX ISSUE, BUT THAT IF THE MYANMAR
     GOVERNMENT'S   POSITION  ON  THIS  ISSUE  PREVAILS,   YOUR  NET  ESTIMATED
     COMMERCIAL  TAX LIABILITY AT DECEMBER  31,2005  WOULD TOTAL  APPROXIMATELY
     $11.2  MILLION.  PLEASE  EXPAND YOUR  DISCLOSURE TO INDICATE THE EXTENT TO
     WHICH YOU ACCRUED FOR THIS POTENTIAL TAX LOSS.

RESPONSE:

The $11.2  million  potential  commercial  tax  liability  was fully accrued by
Ivanhoe Mines Ltd. This $11.2 million accrual is included in Ivanhoe Mines' 50%
share of the Joint Venture's  "Other  Liabilities"  balance in the Share of Net
Assets table on page 74 of the 40-F.

Disclosure contained in Ivanhoe Mines' June 30, 2006 financial statements filed
under Form 6-K on August 16,2006 states:

         EXCERPT OF Note 4 - INVESTMENT IN JOINT VENTURE
         During the second quarter, JVCo paid $8.1 million (net $4.0 million to
         Ivanhoe Mines) in commercial tax on export sales, which was previously
         accrued, to the Myanmar tax authorities for tax claimed  retroactively
         for the period  January 1, 2003 to March 31,  2004.  At June 30, 2006,
         JVCo's  accounts  payable  balance  included  $22.4 million (net $11.2
         million  to Ivanhoe  Mines) in  commercial  tax for the  period  April
         1,2004 to June 30,2006.  JVCo believes that the tax  provisions in the
         S&K mine joint  venture  agreement  clearly  exempt the mine's  copper
         exports from all tax of a commercial  tax nature and  therefore it has
         lodged an appeal with the tax authorities regarding the application of
         this tax.

Ivanhoe Mines respectfully submits that, because the requested disclosures have
been made and will  continue  to be made,  if  material,  going  forward,  that
investors  will not  benefit  by having  expanded  disclosure  regarding  these
matters in an amended 40-F.


NOTE 5 - CASH AND CASH EQUIVALENTS, PAGE 75

5.   WE NOTE  YOU  DISCLOSE  THAT  ASIA  GOLD'S  AND  JINSHAN'S  CASH  AND CASH
     EQUIVALENT   BALANCES  WERE  NOT  AVAILABLE  FOR  YOUR  GENERAL  CORPORATE
     PURPOSES.  PLEASE TELL US WHETHER THESE CASH BALANCES REPRESENT RESTRICTED
     CASH. NOTE THAT  RESTRICTED CASH SHOULD BE SEPARATELY  DISCLOSED FROM CASH
     AND CASH  EQUIVALENTS  ON THE FACE OF THE BALANCE  SHEET AND SHOULD NOT BE
     INCLUDED IN THE CASH TOTAL IN THE  STATEMENT OF CASH FLOWS.  REFER TO RULE
     5-02(1) OF REGULATION S-X FOR ADDITIONAL GUIDANCE.



Page 5 of 20


RESPONSE:

Asia Gold's and Jinshan's cash and cash  equivalents  balances do not represent
restricted  cash under Rule 5-02(1) of  Regulation  S-X.  Ivanhoe Mines Ltd. at
December 31, 2005, was not legally  restricted  from  accessing  these cash and
cash  equivalents  balances  as it had  control  over  and  consolidated  these
subsidiaries.  However, as Asia Gold and Jinshan are publicly traded companies,
Ivanhoe Mines Ltd.  included this  disclosure to provide users of the financial
statements with more clarity as to the cash position of Ivanhoe Mines and those
controlled  publicly  traded  companies  that are included in its  consolidated
financial  statements.  We  acknowledge  the Staffs comment and we will revisit
this disclosure in future filings.


NOTE 8 - LONG TERM INVESTMENTS, PAGE 76

6.   WE NOTE  YOU  DISCLOSE  IN  FOOTNOTE  (A)  THAT IN  CONSIDERATION  FOR THE
     RESTRUCTURING OF CERTAIN JOINT VENTURE PARTICIPATING ARRANGEMENTS, JINSHAN
     ISSUED  TO YOU 2.5  MILLION  COMMON  SHARES  WITH A FAIR  VALUE OF  $3.248
     MILLION,  AND THAT YOU RECORDED THIS AMOUNT IN YOUR INCOME  STATEMENT AS A
     RECOVERY OF PRIOR EXPLORATION  EXPENSES.  PLEASE EXPAND YOUR DISCLOSURE TO
     CLARIFY THE NATURE OF THIS RESTRUCTURING, AND EXPLAIN WHY YOU DID NOT HAVE
     TO PROVIDE ANY CONSIDERATION IN EXCHANGE, IF TRUE.

RESPONSE:

In 2004, Ivanhoe Mines accounted for Jinshan as an equity  investment.  At that
time,  it provided a detailed  discussion of Jinshan and its  operations  under
"Description  of the  Business"  in its 2004  40-F  which  was  filed  with the
Commission.   Further  information  regarding  the  valuation  of  the  Jinshan
investment was disclosed in Note 9 (a) of the financial  statements,  including
information  regarding  impairment in the value of the investment.  In December
2005 when  Ivanhoe  Mines'  ownership  interest  in Jinshan  increased  to 53%,
Jinshan  became a subsidiary of Ivanhoe  Mines and was no longer  treated as an
equity investment.  Ivanhoe Mines concluded that the disclosure provided in the
2005 40-F  regarding  the  treatment of Jinshan as an equity  investment in its
December  31,  2004  financial  statements  was  adequate  as Jinshan was now a
consolidated subsidiary.

Clarification of the nature of the restructuring is as follows:

     o   In May 2002,  Jinshan  granted Ivanhoe Mines Ltd., for a period of ten
         years,  the first  right of  refusal  to  participate  in any  mineral
         property interest acquired in China by Jinshan.  For each new project,
         Ivanhoe Mines and Jinshan would make equal  contributions on the first
         $1 million expenditure per project. Thereafter, Jinshan would retain a
         carried  interest in the project through to development.  On April 20,
         2004,  Ivanhoe and Jinshan  entered  into a  definitive  agreement  to
         restructure  their May 2002 mineral  exploration and development joint
         venture. This agreement reduced from 80% to 50% Ivanhoe Mines' maximum
         earn-ins on



Page 6 of 20


         Jinshan's  interests  in  its  most  significant  projects  in  China;
         including the 217 Gold Project in Inner Mongolia  Region,  the Dandong
         (QCZ) Gold  Project in Liaoning  Province,  and the IBS  Platinum  and
         Palladium development and exploration projects in Yunnan Province.

     o   In  April,  2004,  Ivanhoe  Mines  reimbursed  Jinshan a total of $2.3
         million  representing  50% of  expenditures  incurred to date on these
         three projects.  Ivanhoe Mines retained the right to earn up to 80% of
         the  available  interest  in any new  projects  acquired by Jinshan in
         China (excluding  properties acquired by Jinshan in Anhui and Liaoning
         provinces),  under terms similar to those announced in June, 2002. The
         revised agreement also contained a mutual non-compete clause,  whereby
         Jinshan agreed not to compete for any new mineral  properties in Inner
         Mongolia Region and Ivanhoe Mines undertook not to compete for any new
         mineral properties in Liaoning Province.

     o   In addition,  Ivanhoe Mines transferred to Jinshan 50% of its interest
         in the Shuteen exploration license in southern Mongolia. Ivanhoe Mines
         acquired the right to earn an 80% interest in Shuteen in early 2002 by
         undertaking  to complete a $1.5  million  exploration  program  before
         December  31,   2004.   In  April  2004,   Ivanhoe   Mines  had  spent
         approximately $1.4 million on the project.

     o   In consideration for this transaction, Jinshan issued to Ivanhoe Mines
         2.5  million  common  shares  with  a fair  value  of  $3,247,476,  as
         reimbursement  for  prior  exploration   costs,   including   property
         payments.  Ivanhoe Mines expenses all  exploration  costs in line with
         SEC Industry Guide 7 and as a result, all such costs incurred on these
         properties had been expensed. Therefore, the receipt of the shares was
         recorded as a recovery of previously incurred exploration expenses.

We respectfully  submit, for the reasons noted above, that expanded  disclosure
relating to a 2004 equity investment which is now a consolidated  subsidiary of
Ivanhoe Mines would not result in meaningful information to investors and users
of the financial  statements.  We further  submit that from the  perspective of
Ivanhoe  Mines  and its  certifying  officers,  additional  disclosure  was not
material.


EXHIBIT 23.1 - CONSENT OF INDEPENDENT REGISTERED CHARTERED ACCOUNTANTS

7.   WE NOTE THAT YOUR AUDITORS REFER ONLY TO YOUR FINANCIAL STATEMENTS FOR THE
     YEAR ENDED DECEMBER 31, 2005 IN THE CURRENT  CONSENT.  THE REQUIREMENTS OF
     GENERAL  INSTRUCTION  D.9 TO FORM 40-F WOULD  ORDINARILY  REQUIRE THAT YOU
     OBTAIN A CONSENT  REFERENCING  ALL  PERIODS  OF YOUR  FINANCIAL  STATEMENT
     COVERED BY THE AUDIT.

RESPONSE:

We agree,  as do our auditors,  with your  observation  that our auditors refer
only to our  financial  statements  for year  ended  December  31,  2005 in the
current consent.  We respectfully  submit that Deloitte & Touche LLP consent to
the use in the 40-F for the



Page 7 of 20


year ended  December  31, 2005 of their audit  report dated March 30, 2006 (the
"Audit Report"). The Audit Report provides an opinion on the financial position
of Ivanhoe Mines as at December 31, 2005 and 2004 and the results of operations
and cash flows for the two years ended December 31, 2005. We believe, as do our
auditors Deloitte & Touche LLP, that the consent references all periods covered
by the audit through specific reference to the Audit Report.


ENGINEERING COMMENTS

GLOSSARY OF GEOLOGIC AND MINING TERMS, PAGE 7

8.   AS YOU HAVE UTILIZED THE TERMS  PRELIMINARY  ASSESSMENT,  PRELIMINARY  AND
     PRE-FEASIBILITY, AND FEASIBILITY STUDY IN YOUR FILING, IT WOULD BE HELPFUL
     TO HAVE THESE DEFINED IN YOUR GLOSSARY.

RESPONSE:

As the terms noted above are commonly used and  understood  terms in the mining
industry they were not  considered  material for inclusion in the glossary.  In
addition, we believe sufficient clarity exists in the 40-F filing regarding the
use of the terms.

The  definition  of the  terms as  utilized  in our  40-F are set  forth in the
Canadian  National  Instrument  43-101  Standards  of  Disclosure  for  Mineral
Projects December 2005.

In future filings, to reflect the Staffs comments,  we will include definitions
of these terms in our glossary.


DESCRIPTION OF THE BUSINESS, PAGE 24

GENERAL

9.   UNDER  GENERAL  INSTRUCTION  D (9) OF THE  FORM  40-F  GUIDANCE,  YOU  ARE
     REQUIRED  TO  OBTAIN  AND  ATTACH A  CONSENT  FORM  FROM ALL  THIRD  PARTY
     ENGINEERS  INVOLVED IN PREPARING THE ESTIMATES  THAT YOU DISCLOSE.  PLEASE
     AMEND YOUR FILING TO COMPLY WITH THIS GUIDANCE.

RESPONSE:

We acknowledge our obligation  under General  Instruction D(9) of the 40-F that
"if any ...  engineer or appraiser ... is named as having prepared or certified
any part of the ... annual report ... the written  consent of such person shall
be filed",  but respectfully  submit that the consents of all such persons have
been filed as Exhibits 23.2,  23.3,  23.4, 23.5 and 23.6 to the 40-F. While our
AIF names  individuals  at AMEC  Americas  Ltd.,  GRD Minproc  Ltd. and Norwest
Corporation  that were  principally  responsible  for the work to support their
firm's assessment of the reserves estimated, it is the engineering firm itself



Page 8 of 20


that  prepares and issues the report on and  certification  of the reserves and
is, in our view,  the party  required  to deliver  the  consent  under  General
Instruction  D(9).  Where  the party  preparing  and  issuing  the  report  and
certification  is an  individual  -- for instance  Steven B. Kerr in connection
with Nariin  Sukhait,  a consent from that  individual  has been included as an
Exhibit to the 40-F.


SOUTHERN OYU RESOURCES, PAGE 35

10.  WE NOTE IN CALCULATING THE SOUTHERN OYU DEPOSITS,  YOU USED A CUTOFF GRADE
     OF 0.30 PERCENT COPPER EQUIVALENT (CU-EQ.), IN CONTRAST TO THE OVERALL OYU
     TOLGOI RESOURCE  ESTIMATE OF 0.60 PERCENT CU-EQ.  DISPLAYED ON PAGE 33 AND
     THE HUGO RESOURCES  WHICH ALSO USE A CUTOFF GRADE ESTIMATE OF 0.60 PERCENT
     CU-EQ.  AS FOUND ON PAGES 36-38.  PLEASE PROVIDE AN  EXPLANATION  FOR THIS
     VARIANCE.

RESPONSE:

The Mineral Resource has been tabulated using the test of "REASONABLE PROSPECTS
FOR ECONOMIC  EXTRACTION" from the definition of mineral resource as defined in
NI 43-101, but uses a generalized cutoff and to remain consistent with previous
reporting.  The copper equivalent percentages that were selected for tabulation
of the Mineral  Resource were 0.3% copper  equivalent for the open pit Southern
Oyu  deposit  and 0.6%  copper  equivalent  for the  underground  Hugo  Dummett
deposit.

The  Southern Oyu and Hugo Dummett  deposits  are  separate  deposits  that are
expected to be mined using different  mining methods.  The tables of quantities
in the Mineral  Resource  statements for each assume  different  cut-off grades
will apply because of the different methods.

On page 34 in the Total Oyu  Tolgoi  Project  Resources  the  higher of the two
cut-off  grades was used to combine the tonnages as it is considered  that this
was a more conservative approach.


11.  THE DISCLOSURE THAT YOU PROVIDE IN FOOTNOTE 3 ON PAGE 36 INDICATES THAT IN
     CALCULATING  THE COPPER  EQUIVALENT  (CU-EQ.)  METRICS YOU  ASSUMED  METAL
     PROCESS OF U.S. $1.15/LB.  FOR COPPER AND U.S. $450/oz FOR GOLD, USING THE
     EQUATION %CU-EQ. = %CU + AU (G/T) X (11.25/17.64).  HOWEVER,  THIS FORMULA
     APPEARS TO YIELD PRICES OF U.S.  $0.80 FOR COPPER AND U.S.  $350 FOR GOLD,
     RATHER THAN THE AMOUNTS STATED IN THE FILING.

     PLEASE CONFIRM THAT THIS COPPER EQUIVALENT  ESTIMATE WAS PREPARED WITH THE
     LATTER PARAMETERS, I.E. USING A U.S. $0.80 COPPER PRICE AND U.S. $350 GOLD
     PRICE, AS WOULD BE CONSISTENT WITH YOUR PAST REPORTING PRACTICES; AND THAT
     THE OTHER PRICES,  I.E.  U.S.  $1.15/LB.  FOR COPPER AND UJS.  $450/OZ FOR
     GOLD,  WERE USED AS THE REVENUE INPUT FOR THE FLOATING CONE ALGORITHM THAT
     DESIGNATED MATERIAL WITHIN THE FLOATING CONE, IF TRUE.



Page 9 of 20


RESPONSE:

We confirm that the copper equivalent  estimate was prepared using a U.S. $0.80
copper  price  and U.S.  $350 gold  price.  This was  consistent  with our past
reporting practices. The footnote on page 36 should have read US$0.80/lb Cu and
US$350/oz  Au.  Ivanhoe  Mines does not  consider  this error to be  materially
misleading, but will correct the disclosure in all our future filings.


SOUTHERN OYU MINERAL RESERVES - JANUARY 2006. PAGE 38

12.  WE NOTE  THAT YOU HAVE  UTILIZED  AS KEY  PARAMETERS  IN  DETERMINING  THE
     QUANTITIES  OF MINERAL  RESERVES THE BLOCK VALUE NET SMELTER  RETURN (NSR)
     CUT-OFF GRADES OF US$3.54 PER TONNE FOR  SOUTHWESTERN  OYU AND US$3.39 PER
     TONNE FOR  CENTRAL  OYU,  WHICH ARE  APPROXIMATELY  EQUAL TO 0.28  PERCENT
     COPPER EQUIVALENT (CU-EQ.).  HOWEVER, BASED ON THE INFORMATION INCLUDED IN
     THE  JANUARY  2006  SOUTHERN  OYU OPEN PIT  TECHNICAL  REPORT  PREPARED BY
     GRDMINPROC,  WHICH IS POSTED ON SEDAR AND  REFERENCE  IN YOUR  FILING,  IT
     APPEARS  YOU  HAVE  NOT  REFLECTED  THE  COSTS OF  MINING,  PROCESSING  OR
     ADMINISTRATION IN YOUR NSR VALUES.

     GIVEN THAT THE MAJORITY OF THE MATERIALS  MINED UTILIZE A HIGHER CUTOFF NSR
     COST (US$10 PER TONNE AND US$5 PER TONNE), AND THAT YOU ONLY CONSIDERED THE
     NSR COSTS-INCURRED TO PROCESS THE CONCENTRATE AFTER THE MATERIAL LEAVES THE
     MINE SITE (I.E. COSTS SIMILAR TO THE MOST COMMONLY REFERENCED  "OPTIMUM' OR
     'MARGINAL'  CUTOFF  GRADES OR VALUES),  IT APPEARS  YOUR METHOD WOULD YIELD
     DIFFERENT  RESERVE  QUANTITIES  THAT IF YOU  WERE  TO  FULLY  CONSIDER  THE
     ECONOMIC THE ECONOMIC ASPECTS OF OPERATING THE MINE.

     PLEASE  SUBMIT A SCHEDULE  SHOWING THAT PORTION OF YOUR RESERVE  ESTIMATES
     THAT WOULD BE APPROPRIATELY  CONSIDERED  ECONOMICAL TO PRODUCE; AS WELL AS
     ANY  ADDITIONAL   INFORMATION   THAT  YOU  BELIEVE  WOULD  BE  HELPFUL  IN
     UNDERSTANDING YOUR APPROACH. TELL US WHY YOU DISCLOSE CUTOFF GRADES AS NSR
     COSTS INSTEAD OF COPPER EQUIVALENT WEIGH PERCENTAGES.

RESPONSE:

Below we have  included a  discussion  of factors  that we have  considered  in
developing our approach together with the requested schedules.

CUT-OFF GRADES

The cut-off  grades used for  preparing  the  Southern Oyu open pit designs and
reporting  the Mineral  Reserve are the same as those  described by the Society
for Mining,  Metallurgy,  and  Exploration,  Inc.  (SME), in the publication on
Surface  Mining.  In Section 5 Planning and Design of Surface Mines the cut-off
grades are described.
(http://books.smenet.org/surfmin2nded/sm-ch05-sc01-ssoo-bod.cfm)



Page 10 of 20


The following is an extract from the SME publication:

     "CUT-OFF GRADE

     AS STATED BY TAYLOR  (1972),  A  "CUT-OFF  GRADE IS ANY GRADE THAT FOR ANY
     SPECIFIED  REASON IS USED TO  SEPARATE  ANY TWO  COURSES OF  ACTION."  THE
     REASON USED IN SETTING A CUT-OFF GRADE USUALLY  INCORPORATES  THE ECONOMIC
     CHARACTERISTICS OF THE PROJECT.

     WHEN  MINING,  THE  OPERATOR  MUST MAKE A DECISION  AS TO WHETHER THE NEXT
     BLOCK OF MATERIAL  SHOULD BE MINED AND  PROCESSED;  MINED AND  STOCKPILED;
     MINED (TO EXPOSE ORE) AND SENT TO THE WASTE DUMP; OR NOT MINED AT ALL. THE
     GRADE OF THE BLOCK IS USED TO MAKE THIS DECISION.

     FOR ANY  BLOCK TO BE  DELIBERATELY  MINED,  IT MUST  PAY FOR THE  COSTS OF
     MINING,  PROCESSING, AND MARKETING. THE GRADE OF MATERIAL THAT CAN PAY FOR
     THIS BUT FOR NO STRIPPING IS THE BREAKEVEN MINING CUT-OFF GRADE.

     A SECOND  CUT-OFF  GRADE CAN BE USED FOR BLOCKS  THAT ARE BELOW THE MINING
     CUT-OFF GRADE AND WOULD NOT BE MINED FOR THEIR OWN VALUE. THESE BLOCKS MAY
     BE MINED AS WASTE BY DEEPER ORE BLOCKS. THE COST OF MINING THESE BLOCKS IS
     PAID FOR BY THE DEEPER ORE. THE FINAL  DESTINATION OF THESE BLOCKS IS THEN
     ONLY  INFLUENCED  BY COSTS FOR THE BLOCKS ONCE THEY HAVE BEEN  MINED.  THE
     BLOCKS  CAN BE  PROCESSED  AT THIS  POINT  IF THEY  CAN PAY FOR  JUST  THE
     PROCESSING AND MARKETING COSTS. BECAUSE THE REVENUE FOR THE BLOCK DOES NOT
     NEED TO COVER THE MINING COST, THE MILLING CUT-OFF GRADE IS LOWER THAN THE
     MINING CUT-OFF GRADE."

The breakeven  cut-off grade has been used to define the shape of the open pit.
This  methodology  is  described  in  the  Technical  Report  sections  on  pit
optimization and pit design.

The second  cut-off  grade  referred to above,  is called the  milling  cut-off
grade. It is the milling cut-off grade that has been used to define the Mineral
Reserve cut-off grade.  The milling cut-off grade occurs at the point where the
milling cost is equal to the revenue from the ore block.

The milling cost is the processing  cost plus G&A cost. It is necessary to have
different cut-off grades for Southwest Oyu and for Central Oyu as the ore types
in the Southern Oyu deposit have different processing costs. For Southwest Oyu,
cut-off it is estimated to be $3.54/t of ore and for Central it is estimated to
be $3.39/t ore.

NET SMELTER RETURN

The Mineral  Reserve  cut-off  grade has been  reported in units of Net Smelter
Return (NSR). The revenue for a block of ore is the NSR. The NSR is the revenue
paid for the concentrate at the "mine gate." The NSR calculation excludes costs
for mining,  process, and general and administration.  NSR is calculated as the
in-situ values after allowances have been made for:

     o   Recovery to concentrate



Page 11 of 20

     o   Smelter deductions
     o   Concentrate transport
     o   Smelter treatment and refining charges
     o   Impurities
     o   Royalties.

COPPER EQUIVALENT

The industry  standard  definition for copper equivalent is calculated from the
ratio of metal prices.  In performing our  calculations,  we have  considered a
presentation by personnel from the British Columbia  Securities  Commission and
Ontario  Security  Commission - "Good Disclosure  Practices Under NI43-101",  4
March 200, which states that: GOLD AND COPPER EQUIVALENT  CALCULATIONS  REFLECT
GROSS METAL CONTENT AND HAVE NOT BEEN ADJUSTED FOR METALLURGICAL RECOVERIES.

We believe that, the NSR is the preferred method for determining cut-off grades
as the copper equivalent percentages are based on metal prices only

PRODUCTION SCHEDULING

The cut-off grades of NSR$10.00/t  and NSR$5.00/t are used to split the Mineral
Reserve for  production  scheduling  purposes.  In order to allow  higher grade
material  to be  presented  to the  plant  ahead of lower  grade  material  the
NSR$10.00A and NSR$5.00/t have been used.  Material below  NSR$5.00/t and above
milling cut-off grades Southwest Oyu $3.54/t and for Central Oyu $3.39/t ore is
stockpiled and then treated in the later years of the production schedule.

Mineral Reserve Statement

The Mineral Reserve has been reported under the NI 43 101  guidelines.  The key
parameters in determining the Mineral Reserve are:

     o   Metal prices of $400/oz Au and $1.00 /lb Cu
     o   Block value NSR cut-off  grades of $3.54/t for  Southwest  and $3.39/t
         for Central

     Table 1.   Southern Oyu Mineral Reserve 25 January 2006

           ---------------------------------------------------------------------
           CLASS      ORE     NSR $/T     CU     AU G/T   RECOVERED    RECOVERED
                      KT                  %                 CU MLB        AU KOZ
           ---------------------------------------------------------------------
           PROVEN     127       15.91   0.58      0.93        1,451        2,833
           PROBABLE   803        7.96   0.48      0.27        7,431        4,768
           ---------------------------------------------------------------------
           TOTAL      930        9.05   0.50      0.36        8,882        7,601
           ---------------------------------------------------------------------


Page 12 of 20


The financial  analysis  presented in the Technical Report includes all capital
and operating costs estimated for the project and demonstrates that the Mineral
Reserve  is  economically  feasible.  The  processing  schedule  shown  in  the
Technical  Report is the Mineral  Reserve  Schedule  below.  In the  processing
schedule the entire 930 Mt in the Mineral Reserve is processed.






Page 13 of 20



TABLE 1.     PROCESSING SCHEDULES YEAR 1 TO 11

Note: Minor figure differences may occur due to rounding errors.

- ---------------------------------------------------------------------------------------------------------------
Domain   Ore Type      Total/Year      1      2      3      4      5      6      7      8      9      10     11
- ---------------------------------------------------------------------------------------------------------------
                                                                  
SW           1   kt       709,570 25.135 31,025 31,025 31,025 29,576 26,225 18,297 17,313  7,661  12,659  9.240
- ---------------------------------------------------------------------------------------------------------------
                 NSR $/t     9.13  10.05  17.17   9.63  14.99  10.11  14.67  15.68   7.50   7.95    4.27   6.73
                 Cu %        0.44   0.50   0.60   0.47   0.69   0.57   0.65   0.65   0.43   0.44    0.28   0.43
                 Au g/t      0.42   0.45   1.04   0.44   0.82   0.34   0.70   0.80   0.27   0.31    0.14   0.19
                 ----------------------------------------------------------------------------------------------
                 Conc kt   11.246 447.05 640.42 535.83 664.22 573.14 572.93 401.12 255.61 114.51  135.15 128.30
                 ----------------------------------------------------------------------------------------------
                 Con Cu%    24.57  24.88  25.70  23.99  24.69  26.11  26.41  26.57  25.00  25.00   22.11  27.51
                 Con Au g/t 19.14  17.83  38.16  18.38  28.55  12.24  23.89  27.21  12.25  14.21    8.05   8.63
                 Con As     1,949    591    432    785    558  1,530  1,757  1,520  2,227  1,859   1,887  1,328
                 Con Ag     38.62  37.94  41.71  37.78  43.64  42.95  48.13  51.74  40.54  36.55   35.92  34.25
                 ----------------------------------------------------------------------------------------------
                 Copper Mlb 6,093    245    363    283    362    330    334    235    141     63      66     78
                 Gold koz   6,921    256    786    317    610    226    440    351    101     52      35     36
- ---------------------------------------------------------------------------------------------------------------
Central      2   kt        20,461      -      -      -      -  1,666  4,564  5,929  1,539    866   1,023    196
- ---------------------------------------------------------------------------------------------------------------
                 NSR $/t     8.46      -      -      -      -  11.81  12.10   8.00   8.00   7.27    4.28   7.44
                 Cu %        1.02      -      -      -      -   1.28   1.29   0.98   0.98   0.93    0.70   0.94
                 Au g/t      0.08      -      -      -      -   0.08   0.10   0.08   0.08   0.06    0.07   0.08
                 ----------------------------------------------------------------------------------------------
                 Conc kt      701      -      -      -      -  80.37 222.33 192.47  49.75  25.55   17.53   5.92
                 ----------------------------------------------------------------------------------------------
                 Con Cu%    19.00      -      -      -      -  19.00  19.00  19.00  19.00  19.00   19.00  19.00
                 Con Au g/t  0.42      -      -      -      -   0.24   0.57   0.37   0.47   0.39    0.62   0.33
                 Con As     4,818      -      -      -      -  4,774  4,187  4,859  4,916  5,123   5,541  5,246
                 Con Ag         -      -      -      -      -      -      -      -      -      -       -      -
                 ----------------------------------------------------------------------------------------------
                 Copper M1b   294      -      -      -      -     34     93     81     21     11       7      2
                 Gold koz       9      -      -      -      -      1      4      2      1      0       0      0
- ---------------------------------------------------------------------------------------------------------------
Central      3   kt       129,658      -      -      -      -      -    675  6,694 11,037 18,982  12,658 17,626
- ---------------------------------------------------------------------------------------------------------------
                 NSR $/t     8.56      -      -      -      -      -   9.63   8.88   7.84   9.19   13.51   7.75
                 Cu %        0.68      -      -      -      -      -   0.78   0.69   0.64   0.71    0.95   0.64
                 Au g/t      0.12      -      -      -      -      -   0.10   0.13   0.10   0.14    0.24   0.10
                 ----------------------------------------------------------------------------------------------
                 Conc kt    3,878      -      -      -      -      -  23.67 204.23 308.03 592.27  548.55 493.77
                 ----------------------------------------------------------------------------------------------
                 Con Cu%    20.00      -      -      -      -      -  20.00  20.00  20.00  20.00   20.00  20.00
                 Con Au g/t  2.12      -      -      -      -      -    125   2.52   1.68   2.81    4.25   1.35
                 Con As     6,863      -      -      -      -      -  4,689  6,640  7,690  5,843   4,376  6,494
                 Con Ag         -      -      -      -      -      -      -      -      -      -       -      -
                 ----------------------------------------------------------------------------------------------
                 Copper M1b 1,710      -      -      -      -      -     10     90    136    261     242    218
                 Gold koz     264      -      -      -      -      -      1     17     17     54      75     21
- ---------------------------------------------------------------------------------------------------------------
Central      4   kt        70,512      -      -      -      -     39    408  2,352  3,556  7,639   7,926  7,808
- ---------------------------------------------------------------------------------------------------------------
                 NSR $/t     9.28      -      -      -      -   9.19  12.83   7.55   8.52  10.21   12.04   8.06
                 Cu %        0.56      -      -      -      -   0.68   0.90   0.52   0.52   0.59    0.67   0.52
                 Au g/t      0.27      -      -      -      -   0.06   0.15   0.14   0.26   0.35    0.43   0.21
                 ----------------------------------------------------------------------------------------------
                 Con ckt    1.467      -      -      -      -   0.99  13.88  44.78  67.30 166.57  198.70 147.52
                 ----------------------------------------------------------------------------------------------
                 Con Cu%    24.00      -      -      -      -  24.00  24.00  24.00  24.00  24.00   24.00  24.00
                 Con Au g/t  8.63      -      -      -      -   1.68   3.14   4.63   9.06  10.56   11.57   7.12
                 Con As     2,899      -      -      -      - 11,612  3,915  4,037  2,955  1,881   1,844  2,556
                 Con Ag     0.09       -      -      -      -      -      -      -      -      -       -      -
                 ----------------------------------------------------------------------------------------------
                 Copper M1b   776      -      -      -      -      1      7     24     36     88     105     78
                 Gold koz     407      -      -      -      -      0      1      7     20     57     74      34
- ---------------------------------------------------------------------------------------------------------------
All Central      kt       220,631      -      -      -      -  1,705  5,647 14.975 16,131 27,487  21,607 25,630
- ---------------------------------------------------------------------------------------------------------------
                 NSR $/t     8.77      -      -      -      -  11.75  11.86   8.32   8.01   9.41   12.54   7.84
                 Cu %        0.67      -      -      -      -   1.26   1.20   0.78   0.64   0.68    0.84   0.61
                 Au g/t      0.16      -      -      -      -   0.08   0.10   0.11   0.14   0.20    0.30   0.13
                 ----------------------------------------------------------------------------------------------
                 Conc kt    6,047      -      -      -      -     81    260    441    425    784     765    647
                 ----------------------------------------------------------------------------------------------
                 Con Cu%    20.85      -      -      -      -  19.06  19.36  19.97  20.52  20.82   21.02  20.90
                 Con Au g/t  3.50      -      -      -      -   0.25   0.77   1.80   2.70   4.38    6.06   2.65
                 Con As     5,664      -      -      -      -  4,857  4,218  5,600  6,616  4,978   3,746  5,585
                 Con Ag     0.00       -      -      -      -      -      -      -      -      -       -      -
                 ----------------------------------------------------------------------------------------------
                 Copper Mlb 2.780      -      -      -      -     34    111    194    192    360     354    298
                 Gold koz     681      -      -      -      -      1      6     26     37    110     149     55
- ---------------------------------------------------------------------------------------------------------------
All OP Ore       kt       930,201 25,135 31,025 31,025 31,025 31,281 31,872 33,271 33,445 35,148  34,266 34,869
- ---------------------------------------------------------------------------------------------------------------
                 NSR $/t     9.04  10.05  17.17   9.63  14.99  10.20  14.17  12.37   7.74   9.09    9.48   7.55
                 Cu %        0.50   0.50   0.60   0.47   0.59   0.61   0.74   0.71   0.54   0.63    0.63   0.56
                 Au g/t      0.36   0.45   1.04   0.44   0.82   0.32   0.60   0.49   0.21   0.22    0.24   0.14
                 ----------------------------------------------------------------------------------------------
                 Conc kt   17.323    447    640    536    664    571    682    961    660    921   1.173    447
                 ----------------------------------------------------------------------------------------------
                 Con Cu%    23.23  24.88  25.70  23.99  24.69  25.33  25.47  22.06  22.96  21.31   20.98  24.88
                 Con Au g/t 13.65  17.83  38.16  18.38  28.55  12.52  20.61  11.73   6.75   5.32    4.94  17.83
                 Con As     3,777    666    485    886    627  1,550  2,252  4,961  4,891  4,989   4,853    666
                 Con Ag     39.03  37.94  41.71  37.78  43.64  41.31  44.93  38.61  42.26  43.75   41.52  37.94
                 ----------------------------------------------------------------------------------------------
                 Copper M1b 8,872    245    363    283    362    319    383    467    334    433     543    245
                 Gold koz   7,600    256    786    317    610    230    452    362    143    158     186    256
- ---------------------------------------------------------------------------------------------------------------



Page 14 of 20



Table 2.     Processing Schedules Year 12 to 30

Note: Minor figure differences occur due to rounding errors

- ------------------------------------------------------------------------------------------------------------------
Domain   Ore Type      Total/Year      1      2      3      4      5      6      7      8      9       10       11
- ------------------------------------------------------------------------------------------------------------------
                                                                  
SW           1   kt       709,570 21,139 31,025 31,025 31,025 28,050 18,961 27,371 26,677 25,706  110,547   18,864
- ------------------------------------------------------------------------------------------------------------------
                 NSR $/t     9.13   6.85   7.18   7.36   7.79  10.66  11.83   4.29   4.26   4.29     7.58     9.34
                 Cu %        0.44   0.43   0.44   0.43   0.42   0.46   0.48   0:27   0.27   0.27     0.44     0.37
                 Au g/t      0.42   0.20   0.22   0.26   0.33   0.57   0.67   0.16   0.16   0.15     0.26     0.55
                 -------------------------------------------------------------------------------------------------
                 Con ckt   11,246 323.55 506.21 489.95 471.67 471.81 318.56 282.22 275.36 266.46 1,758.34 1,613.55
                 -------------------------------------------------------------------------------------------------
                 Con Cu%    24.57  24.92  24.13  24.19  24.16  24.01  24.28  22.63  22.51  22.75    24.57    23.89
                 Con Au g/t 19.14   8.52   8.72  10.91  14.79  24.53  29.70  9.56    9.45   9.20    11.08    29.55
                 Con As     1,949  2,537  3,670  2,226  1,392   913   1,094  2,581   2.81  2,510    3,732    1,864
                 Con Ag     38.62  35.91  38.79  37.36  33.17  40.42  43.43  33.20  33.16  32.83    33.72    37.82
                 -------------------------------------------------------------------------------------------------
                 Copper Mlb 6,093    178    269    261    251    250    171    141    137    134      953      850
                 Gold koz   6,921     89    142    172    224    373    304     87     84     79      627    1,533
- ------------------------------------------------------------------------------------------------------------------
Central      2   kt        20,461     96      -      -      -     29    316    985    828    889      827      708
- ------------------------------------------------------------------------------------------------------------------
                 NSR $/t     8.46   7.44      -      -      -   7.44   5.38   4.31   4.50   5.64     8.46     5.24
                 Cu %        1.02   0.94      -      -      -   0.94   0.78   0.70   0.72   0.81     1.03     0.78
                 Au g/t      0.08   0.08      -      -      -   0.08   0.07   0.06   0.06   0.07     0.06     0.06
                 -------------------------------------------------------------------------------------------------
                 Conc kt      701   2.91      -      -      -   0.88   6.82  17.13  14.98  20.32    28.75    15.12
                 -------------------------------------------------------------------------------------------------
                 Con Cu%    19.00  19.00      -      -      -  19.00  19.00  19.00  19.00  19.00    19.00    19.00
                 Con Au g/t  0.42   0.33      -      -      -   0.33   0.49   0.42   0.51   0.33     0.01     0.23
                 Con As     4,818  5,246      -      -      -  5,246  5,420  6.240  5,509  5,540    5,786    6,495
                 Con Ag         -      -      -      -      -      -      -      -      -      -        -        -
                 -------------------------------------------------------------------------------------------------
                 Copper Mlb   294      1      -      -      -      0      3      7      6      9       12        6
                 Gold koz       9      0      -      -      -      0      0      0      0      0        0        0
- ------------------------------------------------------------------------------------------------------------------
Central      3   kt       129,658  8.052      -      -      -  2,423  9,601  1,967  2,631  3,648   28,100    5,563
- ------------------------------------------------------------------------------------------------------------------
                 NSR $/t     8.56   7.45      -      -      -   7.45   7.28   4.46   5.64   7.03     8.86     5.17
                 Cu %        0.68   0.63      -      -      -   0.63   0.61   0.41   0.50   0.61     0.71     0.46
                 Au g/t      0.12   0.09      -      -      -   0.09   0.09   0.06   0.06   0.06     0.12     0.07
                 -------------------------------------------------------------------------------------------------
                 Conc kt    3,878 219.35      -      -      -  66.02 255.02  32.68  55.38  96.45   675.95   107.05
                 -------------------------------------------------------------------------------------------------
                 Con Cu%    20.00  20.00      -      -      -  20.00  20.00  20.00  20.00  20.00    20.00    20.00
                 Con Au g/t  2.12   1.11      -      -      -   1.11   1.08   0.51   0.54   0.40     2.00     0.68
                 Con As     6,863  6,761      -      -      -  6,761  6,908 10,146  9,693 10,874    7,589   13,614
                 Con Ag         -      -      -      -      -      -      -      -      -      -        -        -
                 -------------------------------------------------------------------------------------------------
                 Copper Mlb 1,710     97      -      -      -     29    112     14     24     43      386       47
                 Gold koz     264      8      -      -      -      2      9      1      1      1       56        2
- ------------------------------------------------------------------------------------------------------------------
Central      4   kt        70,512  3,482      -      -      -  1,048  4,277  1,347  1,657  1,720   23,517    3,736
- ------------------------------------------------------------------------------------------------------------------
                 NSR $/t     9.26   7.77      -      -      -   7.77   7.45   4.39   5.14   4.97    10.88     4.57
                 Cu %        0.56   0.50      -      -      -   0.50   0.48   0.31   0.37   0.36     0.65     0.31
                 Au g/t       037   0.20      -      -      -   0.20   0.19   0.09   0.09   0.08     0.32     0.11
                 -------------------------------------------------------------------------------------------------
                 Conc kt    1.467  63.66      -      -      -  19.16  75.18  14.79  21.91  22.29   569.01    41.77
                 -------------------------------------------------------------------------------------------------
                 Con Cu%    24.00  24.00      -      -      -  24.00  24.00  24.00  24.00  24.00    24.00    24.00
                 Con Au g/t  8.63   7.00      -      -      -   7.00   6.91   4.91   3.99   3.58     9.00     5.63
                 Con As     2,899  2,447      -      -      -  2,447  2,741  7,949  9,458  7,729    2,599    8,604
                 Con Ag      0.09      -      -      -      -      -      -      -      -      -        -     0.09
                 -------------------------------------------------------------------------------------------------
                 Copper Mlb   776     34      -      -      -     10     40      8     12     12      301       22
                 Gold koz     407     14      -      -      -      4     17      2      3      3      165       8
- ------------------------------------------------------------------------------------------------------------------
All Central      kt       220,631 11,631      -      -      -  3,500 14,193  4,299  5,115  6,257   52,445   10,008
- ------------------------------------------------------------------------------------------------------------------
                 NSR $/t     8.77   7.55      -      -      -   7.55   7.28   4.40   5.29   6.26     9.76     4.95
                 Cu %        0.67   0.59      -      -      -   0.59   0.58   0.45   0.49   0.57     0.69     0.43
                 Au g/t      0.16   0.12      -      -      -   0.12   0.12   0.07   0.07   0.07     0.21     0.08
                 -------------------------------------------------------------------------------------------------
                 Conc kt    6,047    286      -      -      -     86    337     65     92    139    1,474      164
                 -------------------------------------------------------------------------------------------------
                 Con Cu%    20.85  20.88      -      -      -  20.88  20.87  20.65  20.79  20.49    21.52    20.93
                 Con Au g/t  3.50   2.41      -      -      -   2.41   2.37   1.50   1.35   0.90     4.66     1.90
                 Con As     5,664  5,785      -      -      -  5,785  5,947  8,608  8,958  9,591    5,627   11,732
                 Con Ag      0.00      -      -      -      -      -      -      -      -      -        -     0.02
                 -------------------------------------------------------------------------------------------------
                 Copper M1b 2,780    132      -      -      -     40    155     29     42     63      699       76
                 Gold koz     681     22      -      -      -      7     26      3      4      4      221       10
- ------------------------------------------------------------------------------------------------------------------
All OP Ore       kt       930,201 32,770 31,025 31,025 31,025 31,550 33,154 31,670 31,792 31,964  162,992  128,872
- ------------------------------------------------------------------------------------------------------------------
                 NSR $/t     9.04   7.10   7.18   7.36   7.79  10.31   9.88   4.30   4.43   4.67     8.28     9.00
                 Cu %        0.50   0.49   0.44   0.43   0.42   0.47   0.51   0.29   0.30   0.33     0.52     0.37
                 Au g/t      0.36   0.17   0.22   0.26   0.33   0.52   0.43   0.15   0.14   0.14     0.24     0.51
                 -------------------------------------------------------------------------------------------------
                 Conc kt   17,323    609    506    490    472    558    656    347    368    406    3,232    1,777
                 -------------------------------------------------------------------------------------------------
                 Con Cu*    23.23  23.03  24.13  24.19  24.18  23.53  22.53  22.26  22.08  21.98    23.18    23.62
                 Con Au g/t 13.65   5.66   8.72  10.91  14.79  21.16  15.65   8.08   7.42   6.35     8.16    27.00
                 Con As     3,777  4,061  3,670  2,226  1,392  1,665  3,589  3,704  4,182  4,938    4,596    2,774
                 Con Ag     39.03  19.07  36.79  37.36  33.17  34.18  21.10  27.01  24.83  21.57    18.35    34.33
                 -------------------------------------------------------------------------------------------------
                 Copper Mlb 8,872    309    269    261    251    289    326    170    179    196    1,652      926
                 Gold koz   7,600    111    142    172    224    380    330     90     68     83      848    1,543
- ------------------------------------------------------------------------------------------------------------------



Page 15 of 20

INTEGRATED DEVELOPMENT PLAN, PAGE 40

13.  YOU STATE THE MIXED CONFIDENCE  LEVELS OF THE STUDIES TO DATE ALLOW YOU TO
     CLASSIFY THE INTEGRATED DEVELOPMENT PLAN (IDP) AS A PRELIMINARY ASSESSMENT
     (PA). WE UNDERSTAND THAT FOR RESERVES TO BE DESIGNATED,  A PRE-FEASIBILITY
     STUDY HAS TO BE COMPLETED UNDER THE  REQUIREMENTS  OF NATIONAL  INSTRUMENT
     43-101.  PLEASE  DESCRIBE FOR US THE  SIMILARITIES  AND RELATIVE  ACCURACY
     LEVEL  OF  YOUR   PRELIMINARY   ASSESSMENT,   COMPARED  TO  A  PRELIMINARY
     FEASIBILITY STUDY. PLEASE ENSURE THAT THE RESERVE INFORMATION YOU DISCLOSE
     COMPLIES WITH THE ANNUAL INFORMATION FORM REQUIREMENTS UNDER CANADIAN LAW,
     AS THIS IS NECESSARY TO COMPLY WITH GENERAL  INSTRUCTION  B(3) OF THE FORM
     40-F GUIDANCE.

RESPONSE:

The reserve  information  disclosed by Ivanhoe  Mines  complies with the annual
information form requirements  under Canadian law. These  requirements  include
the disclosure of:

     o   Mineral Resource and Mineral Reserve Estimates - The mineral resources
         and mineral reserves, if any, including

         (a)     the quantity and grade or quality of each  category of mineral
                 resources and mineral reserves;

         (b)     the key  assumptions,  parameters and methods used to estimate
                 the mineral resources and mineral reserves; and

         (c)     the  extent to which the  estimate  of mineral  resources  and
                 mineral reserves may be materially  affected by metallurgical,
                 environmental,    permitting,    legal,    title,    taxation,
                 socio-economic,   marketing,   political  and  other  relevant
                 issues.

     o   The appropriate  terminology as set out in, National Instrument 43-101
         STANDARDS OF  DISCLOSURE  FOR MINERAL  PROJECTS,  to describe  mineral
         reserves and mineral  resources based on a technical  report, or other
         information,  prepared  by or under  the  supervision  of a  qualified
         person.

The Mineral  Reserves  were  declared in the January 2006  Southern Oyu Mineral
reserve Pre  feasibility  Study.  This  Technical  Report is separate  from the
Integrated Development Plan.

The IDP was issued in September 2005 and was issued as a Preliminary Assessment
and did not declare a Mineral Reserve.



Page 16 of 20

MONYWA COPPER PROJECT, PAGE 58

14.  GIVEN THE  OPERATING  HISTORY OF THE MINES IN THE MONYWA  COPPER  PROJECT,
     TELL US WHY YOU HAVE NOT  DISCLOSED  THE  RESERVES  ASSOCIATED  WITH THESE
     OPERATING MINES.

RESPONSE:

 In assessing whether to disclose reserves associated with the Monywa Copper
Project, Ivanhoe Mines considered the following factors:

     o   We account for the joint  venture as an equity  investment  and we are
         not the operator of the joint venture;

     o   The mine  operates  in a  country  that is  currently  under  economic
         sanctions from the US Government;

     o   The  joint  venture  has  been in  operation  since  1997  and has had
         sustained  production  over  several  years  and  reserves  have  been
         disclosed in the past, most recently at December 31,2004;

     o   There  are  operational  issues  associated  with  the  joint  venture
         resulting from a lack of supplies and equipment.

At the end of 2005 and in the first quarter of 2006,  despite  several years of
operations,  the financial survival of the mine was dependent on the resolution
of  factors  disclosed  on pages 58 to 60 of the 40-F and pages 28 to 30 of the
MD&A.  Ivanhoe Mines concluded based on the factors  referenced above, that the
disclosure  of  mineral  reserves  at  December  2005 was not  appropriate  and
therefore took the most conservative  approach in reporting.  In the absence of
the disclosure of mineral reserves,  Ivanhoe Mines made the following statement
on page 30 of its MD&A: "IF THESE ISSUES CANNOT BE SATISFACTORILY RESOLVED IN A
TIMELY  MANNER,  THE COMPANY  MAY, AS PART OF A FUTURE  REVIEW OF THE  CARRYING
VALUE OF ITS ASSETS,  BE REQUIRED TO REFLECT A SIGNIFICANT  IMPAIRMENT  OF, AND
REDUCE ON ITS FINANCIAL STATEMENTS, THE CARRYING VALUE OF ITS INVESTMENT IN THE
S&K MINE."


Since our disclosure in our December 31, 2005 40-F,  mining  equipment has been
imported  into  Myanmar  and has been  assembled  and is being used at the mine
however,  there continue to be operational  issues associated with the mine due
to lack of supplies.  Ivanhoe Mines will reassess the disclosure of reserves in
future filings while continually assessing the impairment of the carrying value
of our equity investment.

FINANCIAL STATEMENTS GENERAL

15.  THE WORDS "DEVELOPMENT" AND "PRODUCTION" HAVE VERY SPECIFIC MEANINGS UNDER
     INDUSTRY  GUIDE 7(a) (4).  THE TERM  "DEVELOPMENT  STAGE" WOULD APPLY WHEN
     ENGAGED IN PREPARING RESERVES FOR PRODUCTION, WHEREAS "PRODUCTION STAGE"



Page 17 of 20

     WOULD  BE   APPROPRIATE   FOR  COMPANIES   ENGAGED  IN   COMMERCIAL-SCALE,
     PROFIT-ORIENTED  EXTRACTION  OF  MINERALS.  IF YOU ARE UNABLE TO  DISCLOSE
     "RESERVES"  AS DEFINED  BY GUIDE 7,  PLEASE  REMOVE  THE TERMS  "DEVELOP,"
     "DEVELOPMENT" AND "PRODUCTION"  THROUGHOUT YOUR FINANCIAL STATEMENTS,  AND
     REPLACE  THIS  TERMINOLOGY,   AS  NEEDED,  WITH  THE  TERMS  "EXPLORE"  OR
     "EXPLORATION." IF THE TERMINOLOGY UTILIZED IN YOUR ANNUAL INFORMATION FORM
     IS NOT CONSISTENT WITH THIS GUIDANCE, PLEASE INCLUDE DISCLOSURE ADDRESSING
     THESE  DIFFERENCES.  PLEASE REFER TO  INSTRUCTION  1 TO  PARAGRAPH  (A) OF
     INDUSTRY  GUIDE  7,  LOCATED  ON OUR  WEBSITE  AT THE  FOLLOWING  ADDRESS:
     WWW.SEC.GOV/DIVISIONS/CORPFIN/FORMS/INDUSTRV.HTM#SECGUIDE7

RESPONSE:

The Mineral Reserves have been prepared under Canadian NI43-101.

Ivanhoe  Mines has noted the Staffs  comment  and, in future  filings,  Ivanhoe
Mines  will  continually   assess  whether  they  are  an  exploration   stage,
development  stage or production  stage  company,  and will only use such words
"development" and "production" when appropriate.

Additionally, Ivanhoe Mines will disclose the following in its future filings:

        CAUTIONARY  NOTE TO U.S.  INVESTORS  CONCERNING  ESTIMATES OF MEASURED,
        INDICATED AND INFERRED MINERAL RESOURCES:

        This  document,  including  the  documents  incorporated  by  reference
        herein,  has been  prepared  in  accordance  with the  requirements  of
        securities laws in effect in Canada, which differ from the requirements
        of United States securities laws. Without limiting the foregoing,  this
        document,  including the documents  incorporated  by reference  herein,
        uses the terms "measured", "indicated" and "inferred" resources. United
        States  investors are advised that, while such terms are recognized and
        required by Canadian  securities laws, the SEC does not recognize them.
        Under United States standards,  mineralization may not be classified as
        a  "reserve"   unless  the   determination   has  been  made  that  the
        mineralization  could be economically and legally produced or extracted
        at the time the reserve  determination is made. United States investors
        are  cautioned  not to  assume  that  all or any  part of  measured  or
        indicated  resources  will ever be converted  into  reserves.  Further,
        "inferred  resources"  have a great amount of  uncertainty  as to their
        existence and as to whether they can be mined legally or  economically.
        It cannot be assumed that all or any part of the  "inferred  resources"
        will ever be upgraded to a higher  category.  Therefore,  United States
        investors are also  cautioned not to assume that all or any part of the
        inferred  resources  exist,  or  that  they  can be  mined  legally  or
        economically.  Disclosure of "contained ounces" is permitted disclosure
        under Canadian  regulations;  however,  the SEC only permits issuers to
        report  "resources" as in place tonnage and grade without  reference to
        unit measures.  Accordingly,  information  concerning  descriptions  of
        mineralization  and  resources  contained in this  document,  or in the
        documents



Page 18 of 20

        incorporated  by reference,  may not be comparable to information  made
        public  by  United  States  companies  subject  to  the  reporting  and
        disclosure   requirements  of  the  SEC.  National   Instrument  43-101
        STANDARDS OF  DISCLOSURE  FOR MINERAL  PROJECTS ("NI 43-101") is a rule
        developed by the Canadian  Securities  Administrators  that establishes
        standards for all public  disclosure an issuer makes of scientific  and
        technical  information  concerning  mineral projects.  Unless otherwise
        indicated,   all  reserve  and  resource  estimates   contained  in  or
        incorporated  by  reference  in this  document  have been  prepared  in
        accordance with NI 43-101.  These standards differ  significantly  from
        the  requirements  of the SEC,  and  reserve and  resource  information
        contained  herein  and  incorporated  by  reference  herein  may not be
        comparable  to similar  information  disclosed  by U.S.  companies.  NI
        43-101  permits a historical  estimate made prior to the adoption of NI
        43-101  that does not comply with NI 43-101 to be  disclosed  using the
        historical terminology if the disclosure: (a) identifies the source and
        date of the  historical  estimate;  (b) comments on the  relevance  and
        reliability  of  the  historical  estimate;   (c)  states  whether  the
        historical  estimate uses categories  other than those prescribed by NI
        43-101; and (d) includes any more recent estimates or data available.


CLOSING COMMENTS

IN CONNECTION WITH RESPONDING TO OUR COMMENTS,  PLEASE PROVIDE,  IN WRITING,  A
STATEMENT FROM THE COMPANY ACKNOWLEDGING THAT:

     o   THE  COMPANY IS  RESPONSIBLE  FOR THE  ADEQUACY  AND  ACCURACY  OF THE
         DISCLOSURES IN THE FILING;

     o   STAFF  COMMENTS OR CHANGES TO DISCLOSURE IN RESPONSE TO STAFF COMMENTS
         DO NOT FORECLOSE THE COMMISSION FROM TAKING ANY ACTION WITH RESPECT TO
         THE FILING; AND

     o   THE  COMPANY  MAY  NOT  ASSERT  STAFF  COMMENTS  AS A  DEFENSE  IN ANY
         PROCEEDING INITIATED BY THE COMMISSION OR ANY PERSON UNDER THE FEDERAL
         SECURITIES LAWS OF THE UNITED STATES.

RESPONSE:

Attached, as Appendix A to this letter, is the requested statement.


*****

Page 19 of 20


We appreciate  your  assistance in reviewing this response letter and would ask
that all  questions  or  comments  regarding  this  filing be  directed  to the
undersigned at 604-331-9875.

Yours truly,
per:

IVANHOE MINES LTD.

/s/ Tony Giardini

Tony Giardini
Chief Financial Officer


Attachment

cc:  Lily Dang, Securities and Exchange Commission
     Members of Audit Committee of Ivanhoe Mines Ltd.
     John Macken, President and CEO, Ivanhoe Mines Ltd.
     Gregg Orr, Deloitte & Touche LLP
     Andrew J. Foley, Paul, Weiss, Rifkind, Wharton & Garrison LLP
     Paul Goldman, Goodmans Barristers and Solicitors



Page 20 of 20


                                   APPENDIX A


October 18,2006



Securities and Exchange Commission
Division of Corporation Finance
100 F Street, N.E.
Washington, D.C. 20549-7010

IVANHOE MINES LTD.
Annual Report on Form 40-F (File No. 001-32403)

Reference  is made to the Annual  Report on Form 40-F for the fiscal year ended
December 31, 2005 (File No.  001-32403) (the "Annual  Report") filed by Ivanhoe
Mines Ltd. (the  "Company") on April 5, 2006 with the  Securities  and Exchange
Commission (the  "Commission").  The Company  acknowledges  that the Company is
responsible  for the  adequacy and  accuracy of the  disclosures  in the Annual
Report.  The Company  further  acknowledges  that  comments of the staff of the
Commission  or  changes to  disclosure  in  response  to such  comments  do not
foreclose  the  Commission  from taking any action  with  respect to the Annual
Report.  In addition,  the Company further  acknowledges that it may not assert
the  comments  of the staff of the  Commission  as a defense in any  proceeding
initiated by the Commission or any person under the federal  securities laws of
the United States.


Yours truly,
IVANHOE MINES LTD.
per:

/s/ Tony Giardini
Name:  Tony Giardini
Title: Chief Financial Officer