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The following is an excerpt from a 6-K SEC Filing, filed by BUENAVENTURA MINING CO INC on 4/28/2003.

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Notes to the Consolidated Financial Statements

To the Shareholders of Compaa de Minas Buenaventura S.A.A.

We have made a limited review of the accompanying consolidated balance sheet of Compaa de Minas Buenaventura S.A.A. (a Peruvian company) and subsidiaries (together, the Company) as of March 31, 2003 and the related consolidated statements of income, changes in shareholders'equity and cash flows for the three-month period then ended, stated in Peruvian nuevos soles. The preparation of these consolidated financial statements is a responsibility of the Company's management.

We conducted our limited review in accordance with auditing standards generally accepted in Peru. A limited review of interim financial information consists principally of applying analytical procedures to financial data and making inquiries to persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with generally accepted auditing standards, the objective of which is the expression of an opinion regarding the consolidated financial statements taken as a whole. Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material modifications that should be made to the interim consolidated financial statements referred to above for them to be in conformity with the accounting principles generally accepted in Peru.

Effective January 1, 2003, the Company has adopted IAS 39 Financial Instruments
- Recognition and Measurement which effects are described in notes 5 and 12 to the consolidated financial statements.

Countersigned by:

Vctor Burga

C.P.C. Register No.14859

Lima, Peru

April 22, 2003

Compaa de Minas Buenaventura S.A.A. and subsidiaries

Consolidated Balance Sheets

As of December 31, 2002 (audited) and March 31, 2003 (unaudited)

Note 2002 2003 2003
S/(000) S/(000) US$(000)
16. Assets
º Current assets Cash and cash equivalents 3 90,642 109,361 31,471 Trade and other accounts receivable, net 85,932 79,330 22,829 Accounts receivable from affiliates 11 30,661 30,338 8,730 Inventories, net 4 74,408 80,423 23,143 Current portion of prepaid taxes and expenses 30,860 36,308 10,448
º Total current assets 312,503 335,760 96,621

Long-term account receivable 8,969 9,456 2,721 Prepaid taxes and expenses 13,233 9,500 2,734 Investments in shares 5 1,184,448 1,237,043 355,984 Property, plant and equipment, net 369,352 368,313 105,989 Development costs and mineral lands,
net 148,194 151,002 43,454 Mining concessions, net 6 173,768 169,627 48,814
º Total assets 2,210,467 2,280,701 656,317
º Liabilities and shareholders' equity, net

º Current liabilities Bank loans 7 43,826 35,205 10,131 Trade accounts payable 36,344 27,953 8,044 Accounts payable to affiliates 11 22 22 6 Dividends payable 9(e) 1,343 43,394 12,488 Other current liabilities 62,285 58,941 16,961 Current portion of long-term debt 8 17,192 18,643 5,365
º Total current liabilities 161,012 184,158 52,995
º Derivative instruments 12(a) - 335,552 96,562
º Deferred income tax and workers' profit sharing 17,464 16,948 4,877 Long-term debt 8 113,331 105,223 30,280
º Total liabilities 291,807 641,881 184,714
º Minority interest 45,986 65,623 18,884
º Shareholders' equity, net 9 Capital stock 610,735 610,735 175,751 Investment shares 1,652 1,652 475 Additional paid-in capital 545,266 545,266 156,911 Legal reserve 77,042 95,416 27,458 Retained earnings 646,313 335,579 96,570 Cumulative translation adjustment 6,961 (16,192) (4,660) Unrealized gain on investments in shares carried at fair value - 16,036 4,615 Treasury shares (15,295) (15,295) (4,401)
º Total shareholders' equity 1,872,674 1,573,197 452,719 Total liabilities and shareholders'
equity, net 2,210,467 2,280,701 656,317

Compaa de Minas Buenaventura S.A.A. and subsidiaries

Consolidated Statements of Income (unaudited)

For the three-month period ended March 31, 2002 and 2003

Note 2002 2003 2003
S/(000) S/(000) US$(000)

º Operating revenues Net sales 126,082 153,738 44,241 Royalty income 11(a) 15,325 24,196 6,963
º Total revenues 141,407 177,934 51,204 Costs of operation
Operating costs 69,940 67,532 19,434 Depreciation 8,965 8,308 2,391 Exploration and development costs in
operational
mining sites 12,104 14,821 4,265 Total costs of operation 91,009 90,661 26,090 Gross margin 50,398 87,273 25,114
º Operating expenses General and administrative 15,038 16,757 4,822 Exploration costs in non-operational 8,667 2,494 mining areas 3,692 Sales 5,522 4,906 1,412 Royalties 2,990 4,575 1,317
º Total operating expenses 27,242 34,905 10,045
º Operating income 23,156 52,368 15,069 Other income (expenses)
Gain from change in the fair value of
derivative instruments 12(a) - 91,620 26,365 Share in affiliated companies, net 5(d) 30,399 64,907 18,678 Realized gain (loss) on derivative 12(b) (1,288) instruments 15,566 (371) Interest income 2,289 1,186 341 Gain from exposure to inflation 175 856 246 Interest expense (4,107) (2,310) (665) Amortization of mining concessions 6 (4,120) (3,975) (1,144) Loss from sale of subsidiary's shares 1(d) (6,680) - - Other, net (3,849) 2,662 766 Total other income, net 29,673 153,658 44,216 Income before income tax and minority
interest 52,829 206,026 59,285 Income tax (5,772) (6,441) (1,854) Income before minority interest 47,057 199,585 57,431 Minority interest (1,923) (13,330) (3,836)
º Net income 45,134 186,255 53,595 Basic and diluted earnings per share,
stated in Peruvian Nuevos Soles and
U.S. dollars 13 0.35 1.46 0.42 Weighted average number of shares 13 outstanding 127,225,692 127,225,692 127,225,692

Compaa de Minas Buenaventura S.A.A. and subsidiaries

Consolidated Statements of Changes in Shareholders' Equity (unaudited)

For the three-month period ended March 31, 2002 and 2003

                              Capital stock
                      _____________________________

                                                                                                             Unrealized gain
                                                                Additional                       Cumulative   on investments
                                                     Investment  paid-in     Legal     Retained  translation carried at fair   Treasury
                     Number of shares Common shares    shares    capital    reserve    earnings  adjustment       value         shares     Total
                                         S/(000)      S/(000)    S/(000)    S/(000)    S/(000)     S/(000)       S/(000)       S/(000)    S/(000)

Balance as of
January 1, 2002      137,444,962      186,922        504        525,585    37,375     789,231    5,964       -                (19,418)   1,526,163
Declared and paid
dividends, net of
dividends paid to a
subsidiary, note
9(e)                 -                -              -          -          -          (27,601)   -           -                -          (27,601)
Capitalization of
retained earnings,
notes 9(a) and (b)   -                423,813        1,148      -          -          (424,961)  -           -                -          -
Transfer to legal
reserve              -                -              -          -          4,621      (4,621)    -           -                -          -
Gain from sale of
ADR, note 9(c)       -                -              -          19,681     -          -          -           -                4,123      23,804
Cumulative gain for
translation of
investment in Minera
Yanacocha S.R.L.     -                -              -          -          -          -          4,971       -                -          4,971
Net income           -                -              -          -          -          45,134     -           -                -          45,134
                     __________       __________     __________ __________ __________ __________ __________  __________       __________ __________

Balance as of March
31, 2002             137,444,962      610,735        1,652      545,266    41,996     377,182    10,935      -                (15,295)   1,572,471
                     __________       __________     __________ __________ __________ _________  __________  __________       __________ __________

º Balance as of
January 1, 2003      137,444,962      610,735        1,652      545,266    77,042     646,313    6,961       -                (15,295)   1,872,674
º Declared
dividends, note 9(e) -                -              -          -          -          (41,759)   -           -                -          (41,759)
º Investments kept
at fair value, note
5(a)                 -                -              -          -          -          (5,627)    -           16,036           -          10,409
º Loss on derivative
instruments, note
12(a)                -                -              -          -          -          (431,229)  -           -                -          (431,229)
º Transfer to legal
reserve              -                -              -          -          18,374     (18,374)   -           -                -          -
º Cumulative loss
for translation of
investment in Minera
Yanacocha S.R.L.     -                -              -          -          -          -          (23,153)    -                -          (23,153)
º Net income         -                -              -          -          -          186,255    -           -                -          186,255
                     __________       __________     __________ __________ __________ __________ __________  __________       __________ __________

Balance as of March
31, 2003             137,444,962      610,735        1,652      545,266    95,416     335,579    (16,192)    16,036           (15,295)   1,573,197
                     __________       __________     __________ __________ __________ __________ __________  __________       __________ __________

Compaa de Minas Buenaventura S.A.A. and subsidiaries

Consolidated Statements of Cash Flows (unaudited)

For the three-month period ended March 31, 2002 and 2003

2002 2003 2003 S/(000) S/(000) US$(000)

Operating activities
Collection from customers 117,130 176,414 50,767 Collection of royalties 15,886 24,083 6,930 Collection of interest 2,275 2,440 702 Payments to suppliers and third parties (46,289) (76,052) (21,885) Payments to employees (30,491) (32,094) (9,236) Payments of exploration expenditures (11,517) (19,135) (5,506) Payments of income tax (3,615) (10,835) (3,118) Payments of royalties (3,467) (6,366) (1,832) Payments of interest (3,527) (3,824) (1,100)

Net cash provided by operating activities 36,385 54,631 15,722
º Investing activities Purchase of plant and equipment (18,628) (10,816) (3,112) Proceeds from (payments by) derivative instruments settled 15,566 (1,288) (371) Proceeds from sale of plant and equipment 2,055 392 113 Development expenditures (9,782) (7,422) (2,136) Purchase of investments in shares (3,865) (1,500) (432)

Net cash used in investing activities (14,654) (20,634) (5,938)

º Financing Activities Decrease of bank loans, net (26,845) (8,621) (2,481) Increase (decrease) of long - term debt, net 2,216 (6,657) (1,916) Proceeds from sale of treasury ADR 23,804 - - Net cash used in financing activities (825) (15,278) (4,397)

Net increase in cash during the period 20,906 18,719 5,387

Cash at beginning of period 86,317 90,642 26,084

Cash at period-end 107,223 109,361 31,471

2002 2003 2003 S/(000) S/(000) US$(000)

Reconciliation of net income to net cash provided by operating activities
Net income 45,134 186,255 53,595 Add (deduct)
Gain from change in the fair value of
derivative instruments - (91,620) (26,365) Share in affiliated companies, net (30,399) (64,907) (18,678) Depreciation 9,087 8,791 2,530 Gain from exposure to inflation (175) (856) (246) Amortization of development costs in
operational mining sites 4,279 3,870 1,114 Amortization of mining concessions 4,120 3,975 1,144 Net cost of retired plant and equipment - 1,357 391 Loss on sale of plant and equipment 4,332 37 11 Minority interest 1,923 13,330 3,836 Deferred income tax 2,157 (516) (148) Loss on sale of investments in shares 6,680 - -
º Net changes in assets and liabilities accounts Decrease (increase) of operating assets - Trade and other accounts receivable (24,507) 8,237 2,371 Inventories 6,246 (3,594) (1,034) Prepaid taxes and expenses 7,724 (1,715) (493) Decrease of operating liabilities - Trade and other accounts payable (216) (8,013) (2,306)

º Net cash provided by operating activities 36,385 54,631 15,722

Compaa de Minas Buenaventura S.A.A. and subsidiaries

Notes to the interim consolidated financial statements (unaudited)

As of March 31, 2003 and 2002

1. Interim unaudited consolidated financial statements

a. The accompanying interim consolidated financial statements have been prepared from the accounting books and records of Compaa de Minas Buenaventura S.A.A. (Buenaventura) and subsidiaries (together, the Company), which are maintained in nominal Peruvian currency and adjusted to reflect changes in the National Wholesale Price Level Index (IPM). According to such index, prices decreased 0.5 percent and increased 1.1 percent during the three-month period ended March 31, 2002 and 2003, respectively.

Figures presented in the consolidated financial statements as of December 31, 2002 and for the three-month period ended March 31, 2002 have been inflation adjusted to reflect the change in the National Wholesale Price Index (IPM) at March 31, 2003.

(b) The criteria and accounting principles used by Management in the following interim consolidated financial statements preparation, which should be read together with the 2002 audited report, are similar to those used in the preparation of Buenaventura's annual consolidated financial statements, except for matters related to the adoption of IAS 39, Recognition and Measurement of Financial Instruments, effective January 1, 2003 (see notes 5 and 12). Additionally, in preparing the interim consolidated financial statements, Management made certain estimates and assumptions; accordingly actual results may differ from those presented in this report.

(c) Certain figures of the consolidated financial statements as of December 31, 2002 and for the three-month period ended March 31, 2002 have been reclassified to conform to presentation standards adopted for 2003 financial reporting purposes.

(d) The interim consolidated financial statements include the financial statements of the following subsidiaries:

Ownership percentages as of

December 31, 2002 March 31, 2003

Subsidiaries Direct Indirect Direct Indirect Economic activity % % % %

Buenaventura 100.00 - Advisory and engineering Ingenieros S.A. services related to the mining
100.00 - industry.

Cedimin S.A.C. - 100.00 44.83 55.17 Holds investments in S.M.R.L.

Chaupiloma Dos de Cajamarca,
Minas Conga S.R.L. and other
affiliated companies engaged in
mining activities.

Compaa Minera 99.99 - 99.99 - Holds investments in Condesa S.A. Buenaventura, Yanacocha and other affiliated companies engaged in mining activities.

Compaa Minera 73.63 - 73.63 - Extraction, concentration and Colquirrumi S.A. commercialization of polymetallic ores, mainly zinc and lead. Currently is also engaged in electric power sales.

Consorcio 100.00 - Transmission of electric power Energtico de to mining companies. Huancavelica S.A. 100.00 -

Contacto - 100.00 - 100.00 Placement of insurance contracts Corredores de and provision of administrative Seguros S.A. and technical services in insurance matters.

Inversiones 59.02 - 59.90 - Extraction, concentration and Colquijirca S.A. commercialization of polymetallic ores, mainly zinc and lead, through its subsidiary Sociedad Minera El Brocal S.A.A.

Inversiones 78.04 - 78.04 - Extraction, concentration and Mineras del Sur commercialization of gold in S.A. bars and concentrates.

Metalrgica Los 100.00 - Treatment of minerals and Volcanes S.A. 100.00 - concentrates.

Minera Paula 49 - 51.00 - 51.00 Extraction, concentration and S.A.C. commercialization of concentrates, primarily gold.

Minas Conga - 60.00 - 60.00 Effective December 19, 2000, S.R.L. this entity transferred to Yanacocha its exploration and exploitation rights to the S.M.R.L. Chaupiloma Dos de Cajamarca's mining concessions.

Minera Shila 50.00 50.00 - - Extraction, concentration and S.A.C. commercialization of concentrates, primarily gold.

This Company was absorbed by
Cedimin S.A.C. effective January
2, 2003.

S.M.R.L. 20.00 40.00 20.00 40.00 Owner of the mining concessions Chaupiloma Dos de explored and exploited by Cajamarca Yanacocha.

During the first quarter of 2003, the Company purchased 1,572,000 shares of its subsidiary Inversiones Colquijirca S.A.

for S/1 per share. As a result of this
transaction the Company's ownership in
Inversiones Colquijirca S.A. increased
from 59.02% as of December 31, 2002 to
59.90% as of March 31, 2003.

On March 31, 2002, the Company
transferred its participation in Minera
Huallanca S.A.C. (Huallanca) to BHL - Per
S.A.C., by selling its Huallanca's shares
for US$2,000,000. From this amount,
US$1,500,000 will be collected in three
equal semi-annual installments finishing
on September 30, 2004 and the remaining
US$500,000 will be collected on September
30, 2006 provided that: (i) the level of
economic reserves measured between
September 30, 2004 and September 30, 2006
allows Huallanca to produce 15,000
MT/month of mineral and (ii) the average
price of zinc is higher than US$1,050/MT
in that period. If these conditions are
not met, the final price of the
transaction will be reduced to
US$1,500,000. This transaction has
generated a loss amounting to
S/6,680,000, assuming a sales price of
US$1,500,000, which is separately
presented in the consolidated statements
of income.

On April 2, 2002, the Company sold to
third parties its participation in Minera
Yanaquihua S.A.C. Under the sale
agreement, the buyers will pay royalties
equal to a percentage of the net sales of
Minera Yanaquihua S.A.C.; the royalty
payment percentages will be equal to 5%
in 2004, 6% in 2005, 7% in 2006 and 8% in
2007. Under the contract, the buyers have
an option to forego continued royalty
payments and to buy out the annual
royalties section of the agreement for an
amount equal to US$ 3,000,000; if this
option has not been exercised at December
31, 2007, the royalties will increase to
10% of yearly net sales effective January
1st, 2008. The Company's former carrying
amount of the investment of S/5,189,000
(US$1,492,000) is shown as a long-term
account receivable. No income was
recognized on this transaction.

(e) The interim consolidated financial statements of the Company as of March 31, 2002 and for the three-month period then ended were reviewed by other independent auditors, whose report dated April 23, 2002 expressed that based on their review, they were not aware of any material modifications that should be made to those financial statements.

2. Convenience Translation of Peruvian Nuevos Soles amounts into U.S. dollar amounts

The consolidated financial statements are stated in Peruvian Nuevos Soles. U.S.

dollars amounts are
included solely for the
convenience of the reader,
and were obtained by
dividing Peruvian Nuevos
Soles amounts by the
exchange rate for selling
U.S. dollars at March 31,
2003 (S/3.475 to US$1), as
published by the
Superintendencia de Banca y
Seguros (Superintendent of
Bank and Insurance, or
SBS). The convenience
translation should not be
construed as representation
that the amounts of the
consolidated financial
statements in Peruvian
Nuevos Soles have been, or
could be converted into
U.S. dollars at the
foregoing or any other rate
of exchange.

3. Cash and cash equivalents

(a) This item is made up as follows:

As of As of December 31, March 31, 2002 2003 S/(000) S/(000)

Cash 1,143 1,343 Current demand deposit accounts 5,887 13,570 Saving accounts 6,786 - Time deposits
In local currency 73,805 69,804 In foreign currency 3,021 24,644

90,642 109,361

(b) The Company maintains a time deposit in Peruvian currency for S/69,800,000 at an annual interest rate of 5.7 percent with maturity on April 9, 2003.

(c) On March 2003, the Company opened time deposits in foreign currency for US$6,000,000 with annual interest rates ranging from 1.10% to 1.25% and maturities between 15 and 30 days.

4. Inventories, net

(a) This item is made up as follows:

As of December, 31 As of 2002 March 31, 2003 S/(000) S/(000)

Mineral concentrates 31,669 37,858 Supplies 48,678 48,504 80,347 86,362

Less - Slow moving and obsolescence
supplies reserves 5,939 5,939

74,408 80,423

In Management's opinion, the reserve above created by current and prior year write-offs, is sufficient to cover the risks of slow moving and obsolete supplies at December 31, 2002 and March 31, 2003.

5. Investments in shares

This item is made up as follows:

Equity ownership percentage Amount
As of December31, As of March As of As of March 2002 31, 2003 December 31, 31, 2003 2002 % % S/(000) S/(000) Investments carried at fair
value (a)
Sociedad Minera Cerro Verde 9.17 9.17 19,383 S. A. 29,792 Other 4,783 5,103 24,166 34,895
Equity method investments
Minera Yanacocha S.R.L. (c) 43.65 43.65 1,159,467 1,201,387 Sociedad Minera Coshuro de
Responsabilidad Limitada 45.90 45.90 815 761 1,160,282 1,202,148

1,184,448 1,237,043

(a) Until December 31, 2002, the Company carried at cost the investments in shares in entities in which its ownership is less than 20 percent, less any impairment recognized as a result of declines in value deemed to be permanent. Effective January 1, 2003, the Company has adopted IAS 39, Financial Instruments - Recognition and Measurement, which requires that these investments be measured at fair value, and changes in this value be recognized separately in the statement of changes in shareholders' equity. The initial effect on the adoption of this IAS must be recorded as a debit or credit to retained earnings. Accordingly, the Company has recorded a charge of S/5,627,000 to retained earnings, and presents the change in its fair value occurred during the first quarter of 2003 of S/16,036,000 in the caption unrealized gain on investments in shares carried at fair value in the consolidated statement of shareholders' equity.

The Company has determined the fair value as of March 31, 2003 based on the quoted market price of Sociedad Minera Cerro Verde S.A.'s shares as of that date. The Company has not considered the fair value of the other investments due to the effect is not material to the interim consolidated financial statements.

(b) The amount to be recorded as equity participation in Minera Yanacocha S.R.L (hereinafter, Yanacocha) was determined from audited financial statements as of December 31, 2002 and unaudited financial statements as of March 31, 2003.

(c) The calculation of the equity investment in Yanacocha is as follows:

As of March 31,
2002 2003 S/(000) S/(000)

Yanacocha shareholders' equity at beginning 1,808,431 2,414,002 Participation percentage 43.65% 43.65% Company's participation in Yanacocha equity as of January 1st 789,380 1,053,712 Payment over the book value of Yanacocha's shares, net of cumulative amortization (i) 125,461 117,213 Elimination of intercompany gains (ii) (12,441) (11,458) Balance of investment as of January 1st 902,400 1,159,467 Participation in Yanacocha income 32,716 66,791 Amortization of payment above the book value of Yanacocha's shares (i) (2,484) (2,035) Realization of intercompany gains (ii) 199 317 Cumulative translation effect 4,971 (23,153) Other (2,977) - Balance as of March 31, 934,825 1,201,387

(i) Corresponds to a premium paid over the book value of Yanacocha shares in previous years, in
connection with the Company's acquisition of an additional 11.35 percent interest in Yanacocha, through exercise of its preferential rights.

(ii) The elimination of related inter-company gains corresponds to profits generated in past years, and is presented net of the investment in Yanacocha for reporting purposes. The Company increases the investment and recognizes a gain in the share in affiliated companies as Yanacocha depreciates and amortizes the acquired assets.

(d) The amount recognized in the consolidated statements of income as share in affiliated companies, net is made up as follows:

For the three-month period ended as of March 31,
2002 2003 S/(000) S/(000)

Minera Yanacocha S.R.L. 30,431 65,073 Other (32) (166)

30,399 64,907

The share in Yanacocha's income has increased in the three-month period ended March 31, 2003, as compared to the same period of 2002, due mainly to the following reasons: (i) the increase of the realized gold price from US$290 per ounce during the three-month period ended March 31, 2002 to US$352 per ounce during the three-month period ended March 31, 2003, (ii) increase of the volume of ounces of gold sold from 483,201 during the three-month period ended March 31, 2002 to 652,655 during the three-month period ended March 31, 2003, and (iii) decrease of cash cost per ounce from US$146 during the three-month period ended March 31, 2002 to US$134 during the three-month period ended March 31, 2003. Increased revenues have been partially offset by an increase in asset retirement and restoration obligations of US$36 million (Buenaventura equity participation of US$16 million).

(e) Presented below is selected information about Yanacocha, the Company's most significant investment:

Economic activity -

Yanacocha is engaged in the exploration for and exploitation of gold in the open pit mines of Carachugo, San Jos, Maqui Maqui, Cerro Yanacocha and La Quinua; all mines are located in the department of Cajamarca, Peru.

Summary financial information based on the Yanacocha financial statements -

Presented below is certain summary financial information extracted from the Yanacocha financial statements and adjusted to conform to accounting practices and principles of the Company:

Summary data from the Yanacocha balance sheet as of December 31, 2002 (audited) and March 31, 2003 (unaudited):

2002 2003
US$(000) US$(000)

Total assets 1,055,280 1,199,409 Total liabilities 374,755 475,345
Shareholders' equity 680,525 724,064

Summary data from the Yanacocha statements of income for the three-month period ended March 31, 2002 and 2003 (unaudited) :

2002 2003
US$(000) US$(000)

Total revenues 140,303 230,041
Operating income 26,710 70,169
Net income 20,846 43,606

6. Mining concessions, net

Corresponds to the amount paid over the fair value of net assets as a result of the additional purchase of ownerships in subsidiaries.

Movements within the mining
concession cost and
accumulated amortization
accounts were as follows:

Balance Balance
as of as of
December 31, March 31,
2002 Additions Retirements 2003
S/(000) S/(000) S/(000) S/(000)

16. Cost
Cedimin S.A.C. 166,128 - - 166,128 Inversiones Colquijirca
S.A. 40,132 - - 40,132 Consorcio Energtico de
Huancavelica S.A. 8,609 - - 8,609 Sociedad Minera
El Brocal S.A.A. 5,409 - (166) 5,243 220,278 - (166) 220,112

Accumulated amortization
Cedimin S.A.C. 30,416 2,572 - 32,988 Inversiones Colquijirca
S.A. 14,213 1,035 - 15,248 Consorcio Energtico de
Huancavelica S.A. 955 213 - 1,168 Sociedad Minera
El Brocal S.A.A. 926 155 - 1,081 46,510 3,975 - 50,485

Net cost 173,768 169,627

7. Bank loans

Bank loans, contracted in U.S. dollars, are as follows:

As of As of Annual December 31, March 31, interest rate 2002 2003 S/(000) S/(000)

Sociedad Minera
El Brocal S.A.A.
Banco de Crdito del Per Ranging from 3.68% to 4.45% 10,661 4,795 Banco Wiese Sudameris 5.27% 4,922 3,875 Banco Internacional del Per Ranging from
- Interbank 5.18% to 5.32% 7,107 5,352 Banco Interamericano de Ranging from Finanzas - BIF 4.32% to 4.48 % 3,127 -

Inversiones Mineras del
Sur S.A.
Banco Wiese Sudameris 3.38% 7,722 - Banco Wiese Sudameris 3.88% 6,397 - Banco de Crdito del Per Ranging from 2.62% to 3.07% 3,554 19,808

Other subsidiaries 336 1,375

43,826 35,205

Bank loans were obtained to finance working capital needs and have short-term maturities. Loans obtained by Sociedad Minera El Brocal S.A.A. are guaranteed by the related shipments of lead and zinc concentrates inventories.

The other bank loans do not
have specific guarantees.

8. Long term debt

(a) Long-term debt is composed of the following loans, principally denominated in U.S. dollars:

Annual As of As of interest Maturity December 31, March 31, Guarantee rate rate 2002 2003 S/(000) S/(000)

Inversiones Mineras del
Sur S.A.
Banco de Crdito del Per Guaranteed by 4.50% January 2008 71,075 69,500
(i) Buenaventura

Consorcio Energtico de
Huancavelica S.A.
BBVA Banco Continental Guaranteed by Libor plus April 2005 33,109 28,900 Buenaventura 1.20% (2.866% as of March 31, 2003)

Sociedad Minera El
Brocal S.A.A.
Banco de Crdito del Per No specific guarantees Libor plus September 19,546 19,111 3.75% 2006 (5.029% as of March 31, 2003)

Teck Cominco Metals Ltd. No specific guarantees Libor plus December 6,007 5,819
(ii) 6.00% 2006 (7.279% as of March 31, 2003) Other 786 536


130,523 123,866

Less Current portion 17,192 18,643

Long-term portion 113,331 105,223

i. This note contains a quarterly roll over provisin, has a final maturity date in 2006 and is fully guaranteed by Buenaventura. In January 2003, this loan was rolled over and an annual interest rate of 4.50% was established.
ii. This loan is subordinated to the obligations established in the loan agreement signed with Banco de Crdito del Per, see (i).

(b) The long-term debt maturity schedule of the non-current portion of long-term debt is as follows:

Year ended March 31, Amount
S/(000)

2005 22,095
2006 9,240
2007 4,388
2008 69,500

105,223

9. Shareholders' equity

(a) Capital stock -

As of March 31, 2003 the capital stock is made up as follows:

Nominal
value Restatement for inflation effect Total S/(000) S/(000) S/(000)

Capital stock 549,780 60,955 610,735

The Mandatory Annual Shareholders' meeting held on March 26, 2002 decided to increase the Company's capital stock from S/137,444,962 to S/549,779,848 (from S/186,922,000 to S/610,735,000, in
constant values as of March 31, 2003) through the capitalization of a portion of retained earnings as of December 31, 2001, and by increasing the nominal value of the common shares - Series A and B from S/1 to S/4. From the capitalized amount of S/412,334,886 (S/423,813,000 in constant values as of March 31, 2003),

S/129,266,262 corresponds to common shares - Series A and S/283,068,624 to common shares - Series B.

The Shareholders' Meeting held on April 30, 2002 approved the re-designation of common shares - Series B as common shares
- Series A, and then immediately approved the re-designation of common shares Series A as common shares. Both decisions were effective May 3, 2002, at which date the Company's capital stock is comprised of 137,444,962 common shares with a nominal value of S/4 each.

(b) Investment shares -

As of March 31, 2003 the investment shares is made up as follows:

Nominal Restatement for inflation effect Total value
S/(000) S/(000) S/(000)

Investment shares 1,489 163 1,652

The Annual Shareholders' meeting mentioned in paragraph (a) above, also decided to increase the investment shares account from S/372,320 to S/1,489,280 (From S/504,000 to S/1,652,000, in
constant values as of March 31, 2003), by increasing the nominal value of investment shares from S/1 to S/4, concurrent with capitalization of a portion of retained earnings equal to S/1,116,960 (S/1,148,000 in constant values as of March 31, 2003). As a consequence, effective May 3, 2002, there are 372,320 investment shares with a nominal value of S/4 each.

(c) Additional paid-in capital -

The additional paid-in capital principally relates to the premium received on the issuance of Series B common shares. Additionally, it includes a gain that resulted from the sale of treasury ADR.

In the first quarter of 2002, Condesa sold to third parties an additional 314,500 ADR for approximately S/23,804,000, realizing a gain of S/19,681,000, which is presented as additional paid-in capital in the consolidated statements of changes in shareholders' equity.

(d) Legal reserve -

According to the Ley General de Sociedades (General Corporations Law), applicable to individual and unconsolidated financial statements, a
minimum of 10% of distributable income in each year, after deducting income tax, shall be transferred to a legal reserve, until such reserve is equal to 20 percent of capital stock. This legal reserve may be used to offset losses or may be capitalized; however, if used to offset losses or if capitalized, the reserve must be replenished with future profits.

(e) Declared dividends -

The Annual Shareholders meeting held on March 26, 2002 approved a cash dividend of S/29,897,000 (equivalent to S/0.21 per share) from retained earnings as of December 31, 2001. The cash dividend includes dividends of S/2,296,000 paid to a subsidiary. The dividends were available to shareholders from April 2002.

The Annual Shareholders meeting held on March 31, 2003 approved a cash dividend of S/41,759,000 (equivalent to S/0.303 per share) from retained earnings as of December 31, 2002. These dividends will be available to shareholders from April 25, 2003 and are included as dividends payable in the consolidated balance sheets as of March 31, 2003.

10. Legal proceedings

Damages claimed by a French citizen

In February of 2002, the Company and Condesa, together with Newmont Mining, Newmont Second and certain individual persons, were defendants in an action initiated by a French citizen, with jurisdiction before the District Court of the state of Colorado in the United States. The plaintiff alleges that he was engaged as an advisor to Normandy respective to a lawsuit that concluded in October of 1998, and that such lawsuit separately motivated the execution of a Global Transaction Agreement in 2000 between the Company, BRGM, Mine Or, Normandy and their related entities (SEREM). The Global Transaction Agreement provided for full and permanent

revocation and annulment of any preferential rights on the shares of Cedimin S.A.C. in exchange for a one-time payment of US$80 million by the Company, of which the Company paid US$40 million.

The plaintiff asserts that he was injured because Normandy had promised to pay him a commission based fee if he was able to increase the amount of the Company's payment as ordered by the Court, which did not occur, and seeks damages of not less than US$25 million plus interest, in addition to unspecified punitive damages that could increase the amount by threefold.

Additionally, the plaintiff
alleges violations of the
federal RICO statute and
similar provisions of
Colorado law, interference
with contract rights,
defamation and other
damages.

The defendants have filed
various motions to dismiss
the action and believe the
arguments presented for
dismissal have solid legal
ground; however, rather
than responding to these
motions for dismissal, the
plaintiff has filed another
demand. The Company and
Condesa have presented
motions to reject the new
demand.

At this date is not
possible to predict when
the court will rule on the
motions, the possible
outcome of such motions or
a possible range of loss.

11. Transaction with affiliated companies

(a) S.M.R.L. Chaupiloma Dos de Cajamarca (Chaupiloma) is the legal owner of the mineral rights on the mining concessions exploited by Yanacocha., and receives a 3 percent royalty on the net sales of Yanacocha. For the three-month period ended March 31, 2003, royalties earned amounted to S/24,196,000 (S/15,325,000 for the three-month period ended March 31, 2002) and are presented as royalty income in the consolidated statements of income.

(b) In March 2002, Buenaventura Ingenieros S.A. signed a technical service agreement with Yanacocha to perform a number of specialized activities and services. Pursuant to the agreement, the services performed will be related to the construction of mining projects and will include completion of analysis and studies, work plan design, and functions related to planning, monitoring and administrating the infrastructure projects required by Yanacocha in its

operations. This contract will expire on December 31, 2003. The revenues related to this service contract amounted to approximately S/2,746,000 for the three-month period ended March 31, 2003.

(c) In November 2000, Consorcio Energtico de Huancavelica S.A. signed an agreement with Yanacocha for the construction of a 220 kW transmission line between Trujillo and Cajamarca, a 60 kW transmission line between Cajamarca and La Pajuela, and the Cajamarca Norte substation; this agreement also encompassed activities necessary to enlarge the Trujillo substation. Pursuant to this contract, the construction work should be finished in October of 2001. Concurrently, Yanacocha and the Company signed a 10-year agreement covering electric energy transmission and infrastructure operation beginning November 2001. In exchange for Buenaventura operating and managing the transmission project, Yanacocha will pay an annual fee of US$3.7 million. The revenues for these services for the three-month period ended March 31, 2002 and 2003 amounted to approximately S/3,308,000 and S/3,384,000, respectively.

(d) As a result of these and other minor transactions, the Company has the following accounts receivable and payable from affiliated companies:

As of As of March 31, December 31, 2002 2003 S/(000) S/(000)

Receivable
Minera Yanacocha S.R.L. 30,481 30,163 Other 180 175 30,661 30,338

Payable
Compaa Minera Coimolache S.A. 22 22

12. Derivative financial instruments

(a) Until December 31, 2002, the Company did not account for the fair value of the derivative instruments and only disclosed the amount in notes to the consolidated financial statements. Effective January 1, 2003, the Company has adopted IAS 39, Financial Instruments - Recognition and Measurement, which requires that the derivative instruments be recognized as assets or liabilities in the consolidated balance sheet, and measured at their fair value. The initial effect on the adoption of this IAS must be recorded as a debit or credit to retained earnings. Subsequent changes in the fair value must be recognized in the results of the period, unless certain criteria specified in IAS 39 are met.

Management's intention is to hold derivative instruments to hedge the fluctuations in metal prices, mainly gold and silver, and not for trading purposes; however, the Company does not meet all the criteria stated in IAS 39 to accounted for the derivative instruments as a hedge. Accordingly, the Company has recorded their derivative instruments as follow:

º Recorded a charge of S/431,229,000 to retained earnings that includes a minority interest effect of S/4,057,000, and

º Recognized a gain of S/91,620,000 due to the change in fair value occurred during the first quarter of 2003, which is presented as other income in the consolidated statement of income.

In addition, S/335,552,000 is presented as a liability in the consolidated balance sheet in connection with the fair value of the open derivate instruments as of March 31, 2003, as detailed in the paragraph (c) below.

(b) For the three-month period ended March 31, 2003, the Company recognized expenses amounting to S/1,288,000 (revenues amounting to S/15,566,000 for three-month period ended March 31, 2002) in connection with derivative operations settled in those periods.

(c) The tables below present details related to commodity derivative instruments outstanding as of March 31, 2003:

Compaa de Minas Buenaventura S.A.A. -

Quantity
Metal (ounces) Collared price range Period

Minimum Maximum (US$/Oz)

Silver 5,350,000(i) 9,575,000 US$5.80 to US$6.20 April 2003 - August 2006 Gold 692,500(ii) 3,404,000 US$332.13 to US$420 April 2003 - December 2011

i. Includes:
º 3,200,000 Oz Ag with a guaranteed minimum sale price of US$5.80 Oz/Ag (minimum price valid only and when silver price is above US$4.15 Oz/Ag) and a maximum sale price of US$6.20 Oz/Ag.
º 1,025,000 Oz Ag with a guaranteed sales price of US$6 Oz/Ag, only and when the silver price is above US$4 Oz/Ag.

(ii) Includes guaranteed sales 135,000, 202,500 and 45,000 Oz Au only and when gold prices are above US$279.50, US$265 and US$290 Oz/Au, respectively.

Sociedad Minera El Brocal S.A.A.

Metal Quantity Price Period

Call options
Zinc 8,100 MT US$900/MT April 2003 - December 2003 Put options
Zinc 16,200 MT US$775/MT April 2003 - December 2003

Future contracts
Zinc (*) 8,100 MT US$895/MT April 2003 - December 2003 Zinc 8,100 MT US$869/MT April 2003 - December 2003 Zinc 4,050 MT US$860/MT April 2003 December 2003 Silver 450,000 Oz US$5.10/Oz April 2003 - December 2003 Silver 225,000 Oz US$5.05/Oz April 2003 - December 2003

(*) This derivative instrument has a daily fade-out provision if zinc price is at or below US$ 750/MT.

(d) The Company maintains a foreign currency forward contract for US$20,186,391 that expires on April 9, 2003 and has a specific exchange rate of S/3.5081 for each U.S. dollar.

13. Basic and diluted earnings per share

The computation of the basic and diluted earnings per share for the three-month period ended March 31, 2002 and 2003 is presented below:

For the three-month period ended March 31,
2002 2003

Net income (numerator) S/45,134,000 S/186,255,000 Shares (denominator) 127,225,692 127,225,692 Earnings per share S/0.35 S/1.46

The number of shares to be used as the denominator in the calculation of basic and diluted earnings per share for the three-month period ended March 31, 2002 and 2003 was determined as follows:

2002 2003

Common shares 137,444,962 137,444,962 Investment shares 372,320 372,320 137,817,282 137,817,282

Less - treasury shares 10,591,590 10,591,590

127,225,692 127,225,692

14. Statistical data

Statistical data of the Company related to the volume of inventories sold and average sale prices by product for the three-month period ended March 31, 2002 and 2003 are as follows:

(a) Mineral volumes sold were:

2002 2003

Gold 62,734 Oz 76,668 Oz
Silver 3,112,469 Oz 2,062,064 Oz
Lead 5,234 MT 4,565 MT
Zinc 11,340 MT 13,603 MT
Copper - 66 MT

(b) Average sales prices were:

2002 2003
US$ US$

Gold 287.89/Oz 349.80/Oz
Silver 4.43/Oz 4.67/Oz
Lead 489.66/MT 459.45/MT
Zinc 793.36/MT 785.96/MT
Copper - 1,656.11/MT

15. Explanation added for English language translation

The accompanying consolidated financial statements are presented on the basis of accounting principles generally accepted in Peru. Certain accounting practices applied by the Company that conform with generally accepted accounting principles in Peru may differ in certain respects to generally accepted accounting principles in other countries.