balance diario marzo 2008

TMH 1932.000 ACUMULADO ANUAL

% H2O 7.68 DENSIDA 461.342384

LEYES CONTENIDOS FINOS RECUPERACION

PROD. T.M.S. Ag OZ/T %Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb

CABEZA 1783.69 5.37 3.82 0.39 7.39 8147.867 51.459 10.914 97.603 100 100

CONC Cu 24.54 116.13 16.76 26.20 6.10 2103.687 2.416 5.948 1.511

CONC Pb 71.69 48.12 51.89 1.75 6.53 3388.959 42.207 1.025 3.187

CONC Zn 167.48 6.59 1.16 0.54 57.06 847.933 1.912 1.373 86.938

RELAVE 1519.98 1.36 0.46 0.12 0.56 1807.288 4.924 2.524 5.966

TMH ### ACUMULADO ANUAL A LA FECHA

% H2O 8.44 DENSIDAD 1369.74


PROD. T.M.S. Ag OZ/T %Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb

CABEZA ### 3.33 2.01 0.55 4.80 371683.628 ### 553.052 4850.407 ### 100.00

CONC Cu 1281.370 45.82 4.45 21.10 10.15 64722.326 56.972 270.353 130.038 17.41 2.81

CONC Pb 2575.575 45.23 57.27 3.13 5.27 128420.310 ### 80.677 135.744 34.55 72.71

CONC Zn 8109.942 5.93 1.39 1.09 51.32 52989.667 113.080 88.380 4162.349 14.26 5.57

RELAVE 89150.027 1.28 0.43 0.13 0.47 125551.326 383.410 113.530 422.276 33.78 18.90

CAMPA 0 TMH

MINA 0 % H2O

RECUPERACION ANAL. MALLAS

Cu Zn %Fe pH MALLA %PESO PROD. T.M.S. Ag OZ/T

100 100 4.51 65 2.74 CABEZA 99333.226 3.32

11.59 2.64 100 2.41 CONC Cu 1256.828 45.20

2.84 150 3.66 CONC Pb 2503.888 45.30

1.84 3.62 200 4.35 CONC Zn 7942.459 5.96

-200 86.85 RELAVE 87630.052 1.28


Cu Zn %Fe pH MALLA %PESO

100.00 ### 15.42 65 7.85

48.88 2.68 23.02 7.91 100 6.57

14.59 2.80 6.79 150 10.61

15.98 85.81 8.39 ### 200 13.19

20.53 8.71 -200 61.79

### ACUMULADO ANUAL A LA FECHA

8.45 DENSIDAD 1386.05


%Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb Cu Zn %Fe pH

1.99 0.55 4.78 363,535.761 1,976.979 542.138 4,752.804 100 ### ### ### 15.62

4.34 21.04 10.23 62,618.639 54.557 264.404 128.527 17.22 2.76 48.77 2.70 23.24 8.00

57.22 3.18 5.29 125,031.350 1,432.768 79.652 132.557 34.39 72.47 14.69 2.79 6.90

1.40 1.10 51.31 52,141.734 111.168 87.007 4,075.411 14.34 5.62 16.05 85.75 8.53 11.00

0.43 0.13 0.48 123,744.038 378.486 111.006 416.310 34.04 19.14 20.48 8.76

ANAL. MALLAS

MALLA %PESO

65 7.94

100 6.65

150 10.73

200 13.34

-200 61.34

TMH 1932.000 ACUMULADO MENSUAL

% H2O 7.677 DENSIDA 461.34238


PROD. T.M.S. Ag OZ/TC %Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb

CABEZA 1783.69 5.37 3.82 0.39 7.39 8147.867 51.459 10.914 97.603 100 100

CONC Cu 24.54 113.16 16.76 26.20 6.10 2103.687 2.416 5.948 1.511

CONC Pb 71.69 48.12 51.89 1.75 6.53 3388.959 42.207 1.025 3.187

CONC Zn 167.48 6.59 1.16 0.54 57.06 847.933 1.912 1.373 86.938

RELAVE 1519.98 1.36 0.46 0.12 0.56 1807.288 4.924 2.524 5.966

TMH 33,200.00 ACUMULADO MENSUAL A LA FECHA

% H2O 8.58 DENSIDAD 1299.18


PROD. T.M.S. Ag OZ/TC%Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb

CABEZA ### 3.56 2.19 0.57 4.81 ### 664.131 ### ### 100.00 100.00

CONC Cu 372.609 60.21 5.33 23.86 9.71 ### 19.859 ### 36.178 20.76 2.99

CONC Pb 863.249 41.50 58.04 2.58 5.04 ### 501.069 ### 43.516 33.16 75.45

CONC Zn ### 5.78 1.36 0.97 51.55 ### 33.037 ### ### 13.04 4.97

RELAVE ### 1.34 0.41 0.14 0.47 ### 110.166 ### ### 33.04 16.59

CAMPA 0 TMH

MINA 0 % H2O


Cu Zn %Fe pH MALLA %PESO PROD. T.M.S. Ag OZ/TC

100 100 4.51 65 2.74 CABEZA 28566.691 3.52

11.59 2.64 100 2.41 CONC Cu 348.067 58.97

2.84 150 3.66 CONC Pb 791.562 41.38

1.84 3.62 200 4.35 CONC Zn 2269.421 5.87

-200 86.85 RELAVE 25157.641 1.35


Cu Zn %Fe pH MALLA %PESO

### 100.00 14.35 65 7.74

51.55 2.48 21.71 7.68 100 6.44

12.93 2.98 6.73 150 10.56

13.76 86.04 7.78 10.39 200 12.71

21.77 8.50 -200 62.55

### ACUMULADO MENSUAL A LA FECHA

8.64 DENSIDAD 1351.50

LEYES CONTENIDOS FINOS RECUPERACION ANAL. MALLAS

%Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb Cu Zn %Fe pH MALLA

2.14 0.57 4.77 ### 612.672 ### ### ### ### ### ### ### 65

5.01 23.83 9.96 22625.484 17.444 82.958 34.667 20.39 2.85 51.35 2.54 ### 8.00 100

57.97 2.69 5.09 36105.745 458.862 21.268 40.329 32.54 74.90 13.17 2.96 7.08 150

1.37 0.98 51.53 14687.748 31.125 22.353 ### 13.24 5.08 13.84 85.82 8.22 ### 200

0.42 0.14 0.47 37551.509 105.242 35.014 118.153 33.84 17.18 21.67 8.67 -200

ANAL. MALLAS

%PESO

8.05

6.70

10.99

13.24

61.03

CONSUMO DE REACTIVOS Y ACERO (KGS/TMS)

DIA (Kg) DIA MES AÑO REACTIVOS DIAS04Zn 400.00 0.224 0.746 0.861 S04Zn 1,250.00CNNa 100.00 0.056 0.121 0.169 CNNa 225.00Z - 11 50.00 0.028 0.036 0.044 Z - 11 75.00Z - 6 0.00 0.000 0.008 0.010 Z - 6 25.00MIBC 0.00 0.000 0.000 0.000 MIBC 0.00FROTHER - 70 25.00 0.014 0.034 0.034 FROTHER - 70 50.00CAL 1,175.00 0.659 0.994 1.026 CAL 1,450.00CuSO4 0.00 0.000 0.305 0.324 CuSO4 500.00BISULFITO 0.00 0.000 0.000 0.000 BISULFITO 0.00FOSFAT. MONOS 6.50 0.004 0.012 0.010 FOSFAT. MONOS. 20.00TYLOSE 6.50 0.004 0.012 0.010 TYLOSE 20.00BICROM. SODIO 20.00 0.011 0.037 0.031 BICROM. SODIO 60.00CARBON WPH 0.00 0.000 0.000 0.001 CARBON WPH 0.00BOLAS 1.1/2" Ø 293.00 0.164 0.170 0.175 BOLAS 1.1/2" Ø 393.00BOLAS 2" Ø 0.00 0.000 0.224 0.223 BOLAS 2" Ø 331.00

1,783.687 BOLAS 3" Ø 0.000 0.000 0.000 BOLAS 3" Ø 0.0030,350.378 BOLAS 3. 1/2 " Ø 0.00 0.000 0.000 0.000 BOLAS 3. 1/2 " Ø 0.00

101,116.913 BARRAS 3" Ø 0.00 0.000 0.121 0.164 BARRAS 3" Ø 0.00

REACTIVOS DIA MES AÑO

S04Zn 400.00 22,650.00 ###

CNNa 100.00 3,675.00 ###

Z - 11 50.00 1,095.00 4,400.00

Z - 6 0.00 250.00 1,010.00

MIBC 0.00 0.00 0.00

FROTHER - 70 25.00 1,025.00 3,450.00

CAL 1,175.00 30,175.00 ###

CuSO4 0.00 9,250.00 ###

BISULFITO 0.00 0.00 25.00

FOSFAT. MONOS 6.50 370.10 1,035.10

TYLOSE 6.50 370.10 1,030.10

BICROM. SODIO 20.00 1,122.00 3,117.00

CARBON WPH 0.00 0.00 60.00

BOLAS 1.1/2" Ø 293.00 5,151.00 ###

BOLAS 2" Ø 0.00 6,797.00 ###

BOLAS 3" Ø 0.00 0.00 0.00

BOLAS 3. 1/2 " Ø 0.00 0.00 0.00

BARRAS 3" Ø 0.00 3,668.00 ###

DIA MES AÑO

S04Zn 0.224 0.746 0.861

CNNa 0.056 0.121 0.169

Z - 11 0.028 0.036 0.044

Z - 6 0.000 0.008 0.010

MIBC 0.000 0.000 0.000

FROTHER - 70 0.014 0.034 0.034

CAL 0.659 0.994 1.026

CuSO4 0.000 0.305 0.324

SUPERFLOC S - 2 0.000 0.000 0.000

FOSFAT. MONOS. 0.004 0.012 0.010

TYLOSE 0.004 0.012 0.010

BICROM. SODIO 0.011 0.037 0.031

CARBON WPH 0.000 0.000 0.001

BOLAS 1.1/2" Ø 0.164 0.170 0.175

BOLAS 2" Ø 0.000 0.224 0.223

BOLAS 3" Ø 0.000 0.000 0.000

BOLAS 3. 1/2 " Ø 0.000 0.000 0.000

BARRAS 3" Ø 0.000 0.121 0.164

MES AÑO22,250.00 86,700.00

3,575.00 16,950.001,045.00 4,350.00

250.00 1,010.000.00 0.00

1,000.00 3,425.0029,000.00 102,525.00

9,250.00 32,750.000.00 25.00

363.60 1,028.60363.60 1,023.60

1,102.00 3,097.000.00 60.00

4,858.00 17,379.006,797.00 22,509.20

0.00 0.000.00 0.00

3,668.00 16,537.00

SOCIEDAD MINERA CORONA S.A. BALANCE DE 4 PRODUCTOS ENSAYES DEL DIA 17-Apr-23

PLANTA CONCENTRADORA OPCION Cu-Pb-Zn CAMPAÑA MC-03-2008-03.

CHUMPE PRIMER TURNO MINA YAURICOCHA

TMH 644.00 %H2O 8.73 DENSIDAD: 1400.00 ING. E. Chavez

L E Y E S CONTENIDOS FINOS % RECUPERACION ANALISIS MALLAPROD. T.M.S. Ag OZ/TC %Pb %Cu %Zn ONZ Ag TM Pb TM Cu TM Zn Ag Pb Cu Zn %Fe pH MALLA % PESO

CABEZA 587.779 5.57 3.13 0.87 5.64 3608.851 18.397 5.114 33.151 100.00 100.00 100.00 100.00 13.70 65 8.30

CONC Cu 11.657 80.96 8.87 25.68 4.65 1040.254 1.034 2.993 0.542 28.83 5.62 58.54 1.64 24.40 8.00 100 7.30

CONC Pb 25.655 59.64 60.46 2.00 4.38 1686.564 15.511 0.513 1.124 46.73 84.31 10.03 3.39 7.94 150 11.10

CONC Zn 56.981 3.91 0.74 0.88 53.09 245.588 0.422 0.501 30.251 6.81 2.29 9.81 91.25 5.41 11.00 200 13.20

RELAVE 493.486 1.17 0.29 0.22 0.25 636.445 1.431 1.086 1.234 17.64 7.78 21.23 3.72 -200 60.10RATIO 50.42 22.91 10.32 DIFEREN 0.00 0.00 -0.39 0.00

SEGUNDO TURNOTMH 644.00 %H2O 7.80 DENSIDAD 0.00 ING


CABEZA 593.768 3.70 2.83 0.48 5.48 2421.689 16.804 2.850 32.538 100.00 100.00 100.00 100.00 0.00 65 0.00

CONC Cu 6.503 83.40 8.95 22.92 7.78 597.805 0.582 1.490 0.506 24.69 3.46 52.29 1.55 0.00 0.00 100 0.00

CONC Pb 24.250 35.14 57.09 1.05 4.89 939.312 13.844 0.255 1.186 38.79 82.39 8.93 3.64 0.00 150 0.00

CONC Zn 57.578 4.72 1.32 0.76 50.15 299.572 0.760 0.438 28.876 12.37 4.52 15.35 88.74 0.00 0.00### 200 0.00


TERCER TURNOTMH 644.00 %H2O 6.50 DENSIDAD 0.00 ING


CABEZA 602.140 3.19 2.70 0.49 5.30 2117.327 16.258 2.950 31.913 100.00 100.00 100.00 100.00 0.00 65 0.00

CONC Cu 6.382 66.19 12.53 22.95 7.25 465.629 0.800 1.465 0.463 21.99 4.92 49.64 1.45 0.00 0.00 100 0.00

CONC Pb 21.783 31.78 59.00 1.18 4.03 763.084 12.852 0.257 0.878 36.04 79.05 8.71 2.75 0.00 150 0.00

CONC Zn 52.924 5.19 1.38 0.82 52.55 302.772 0.730 0.434 27.811 14.30 4.49 14.71 87.15 0.00 0.00 200 0.00


TMH 1932.000 ACUMULADO DEL DIA 17-Apr-23% H2O 7.68 DENSIDAD 461.34

L E Y E S CONTENIDOS FINOS RECUPERACION ANALISIS MALLAPROD. T.M.S. Ag OZ/TC %Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb Cu Zn %Fe pH MALLA %PESO

CABEZA 1,783.687 4.14 2.88 0.61 5.47 8147.867 51.459 10.914 97.603 100.00 100.00 100.00 100.00 4.51 65 2.74CONC Cu 24.541 77.76 9.84 24.24 6.16 2103.687 2.416 5.948 1.511 25.82 4.69 54.50 1.55 11.59 2.64 100 2.41CONC Pb 71.687 42.89 58.88 1.43 4.45 3388.959 42.207 1.025 3.187 41.59 82.02 9.39 3.27 2.84 150 3.66CONC Zn 167.483 4.59 1.14 0.82 51.91 847.933 1.912 1.373 86.938 10.41 3.72 12.58 89.07 1.84 3.62 200 4.35RELAVE 1,519.975 1.08 0.32 0.17 0.39 1807.288 4.924 2.524 5.966 22.18 9.57 23.13 6.11 -200 86.85RATIO 72.68 24.88 10.65 DIFEREN 0.00 0.0 -0.40 0.00

TMH 33200.00 ACUMULADO MENSUAL A LA FECHA 17-Apr-23% H2O 8.58 DENSIDAD 1299.18


CABEZA 30,350.378 3.56 2.19 0.57 4.81 119118.353 664.131 172.456 1460.132 100.00 100.00 100.00 100.00 14.35 65 7.74CONC Cu 372.609 60.21 5.33 23.86 9.71 24729.171 19.859 88.907 36.178 20.76 2.99 51.55 2.48 21.71 7.68 100 6.44CONC Pb 863.249 41.50 58.04 2.58 5.04 39494.705 501.069 22.293 43.516 33.16 75.45 12.93 2.98 6.73 150 10.56CONC Zn 2,436.904 5.78 1.36 0.97 51.55 15535.681 33.037 23.726 1256.318 13.04 4.97 13.76 86.04 7.78 10.39 200 12.71RELAVE 26,677.616 1.34 0.41 0.14 0.47 39358.797 110.166 37.538 124.119 33.04 16.59 21.77 8.50 -200 62.55RATIO 81.45 35.16 12.45 DIFEREN 0.00 0.00 0.00 0.00

TMH 110434.00 ACUMULADO ANUAL A LA FECHA 17-Apr-23% H2O 8.44 DENSIDAD 1369.74


CABEZA 101,116.913 3.33 2.01 0.55 4.80 371683.628 2028.438 553.052 4850.407 100.00 100.00 100.00 100.00 15.42 65 7.85CONC Cu 1,281.370 45.82 4.45 21.10 10.15 64722.326 56.972 270.353 130.038 17.41 2.81 48.88 2.68 23.02 7.91 100 6.57CONC Pb 2,575.575 45.23 57.27 3.13 5.27 128420.310 1474.975 80.677 135.744 34.55 72.71 14.59 2.80 6.79 150 10.61CONC Zn 8,109.942 5.93 1.39 1.09 51.32 52989.667 113.080 88.380 4162.349 14.26 5.57 15.98 85.81 8.39 10.79 200 13.19RELAVE 89,150.027 1.28 0.43 0.13 0.47 125551.326 383.410 113.530 422.276 33.78 18.90 20.53 8.71 -200 61.79RATIO 78.91 39.26 12.47 DIFEREN 0.00 0.00 -0.02 0.00

CONSUMO DE REACTIVOS Y ACERO (KGS/TMS) A C U M U L A D O 2 , 0 0 7.REACTIVO DIA MES AÑO L E Y E S RECUPERACIONS04Zn 0.224 0.746 0.861 PROD. T.M.S. Ag OZ/TC %Pb % Cu %Zn Ag Pb Cu Zn %FeCNNa 0.056 0.121 0.169 CABEZA 392,691.674 3.22 1.81 0.71 5.36 100.00 100.00 100.00 100.00 14.26Z - 11 0.028 0.036 0.044 CONC Cu 6,813.931 38.73 7.03 21.78 9.87 20.87 6.75 53.30 3.20 20.41Z - 6 0.000 0.008 0.010 CONC Pb 9,628.897 41.64 53.00 4.14 5.94 31.70 71.91 14.32 2.72 7.88MIBC 0.000 0.000 0.000 CONC Zn 35,518.091 5.71 1.23 1.14 51.53 16.04 6.14 14.60 86.99 7.87FROTHER - 0.014 0.034 0.034 RELAVE 340,665.635 1.17 0.32 0.15 0.44 31.39 15.20 18.06 7.10CAL 0.659 0.994 1.026 RATIO 57.63 40.78 11.06 0.00 0.00 0.29 0.00CuSO4 0.000 0.305 0.324

BISULFITO 0.000 0.000 0.000 A C U M U L A D O 2 , 0 0 6.FOSFAT. M 0.004 0.012 0.010 L E Y E S RECUPERACIONTYLOSE 0.004 0.012 0.010 PROD. T.M.S. Ag OZ/TC %Pb % Cu %Zn Ag Pb Cu Zn %FeBICROM. S 0.011 0.037 0.031 CABEZA 367,826.248 2.67 2.10 0.52 5.78 100.00 100.00 100.00 100.00 13.98CARBON 0.000 0.000 0.001 CONC Cu 3,907.372 40.72 7.78 24.44 7.77 16.22 3.94 49.91 1.43 18.79BARRAS Y ACEROS DIA MES AÑO CONC Pb 11,127.890 31.84 55.67 2.68 6.04 36.13 80.24 15.56 3.16 7.32

BOLAS 1.1/2" Ø 0.164 0.170 0.175 CONC Zn 36,124.783 4.62 0.98 0.87 52.34 17.00 4.57 16.36 88.88 7.05

BOLAS 2" Ø 0.000 0.224 0.223 RELAVE 316,685.243 0.95 0.27 0.11 0.44 30.65 11.26 18.43 6.53

BARRAS 3" Ø 0.000 0.121 0.164 RATIO 94.14 33.05 10.18 0.00 0.00 0.26 0.00

CONSUMO DE ENERGIA 2,008 ACUMULADO MENSUAL MINERAL DE COBREDIARIO MENSUAL ANUAL 2007 2006 L E Y E S RECUPERACION

55,524.69 1,129,771.25 4,350,373.60 16,012,961.62 `858,612.360 PROD. T.M.S. Ag oz/TC % Pb % Cu % Zn Ag Pb Cu Zn42.73 31.07 31.62 29.65 30.95 CABEZA 657.582 2.56 0.74 2.41 1.22 100.00 100.00 100.00 100.00

CONC Cu 74.443 15.58 4.86 18.13 9.82 68.92 74.82 85.24 91.00

OBSERVACIONES: A las 05:00 a.m. Se termino con mineral polimetalico. RELAVE 583.138 0.88 0.21 0.40 0.11 30.62 24.92 14.76 8.21

RATIO 8.83 -0.46 -0.26 0.00 -0.79

INDICE KW/TMS:

SOCIEDAD MINERA CORONA S.A. BALANCE DE 4 PRODUCTOS ENSAYES DEL DIA 1-Mar-08

PLANTA CONCENTRADORA OPCION Cu-Pb-Zn CAMPAÑA MC-03-2008-03.

CHUMPE PRIMER TURNO MINA YAURICOCHA

TMH 544.00 %H2O 8.54 DENSIDAD: 1400.00 ING. J.D.L. Cadena


CABEZA 497.542 3.87 2.37 0.60 5.96 2122.467 11.792 2.985 29.654 100.00 100.00 100.00 100.00 12.10 65 8.20CONC Cu 6.322 60.96 4.73 24.62 10.02 424.828 0.299 1.557 0.633 20.02 2.54 52.14 2.14 23.90 8.00 100 7.20CONC Pb 16.086 43.36 57.15 1.33 5.14 768.863 9.193 0.214 0.827 36.22 77.96 7.17 2.79 6.08 150 11.90CONC Zn 54.580 5.96 1.67 1.39 48.11 358.578 0.911 0.759 26.259 16.89 7.73 25.41 88.55 10.30 11.00 200 13.90RELAVE 420.553 1.23 0.33 0.11 0.46 570.198 1.388 0.463 1.935 26.86 11.77 15.50 6.52 -200 58.80RATIO 78.70 30.93 9.12 DIFEREN 0.00 0.00 0.22 0.00

SEGUNDO TURNOTMH 544.00 %H2O 9.67 DENSIDAD 1400.00 ING J. Madrid


CABEZA 491.395 7.36 3.54 0.90 6.26 3986.654 17.395 4.423 30.761 100.00 100.00 100.00 100.00 15.40 65 7.50CONC Cu 11.647 117.12 7.31 24.57 8.87 1503.629 0.851 2.862 1.033 37.72 4.89 64.71 3.36 21.70 8.00 100 6.80CONC Pb 25.616 49.09 56.40 2.27 5.68 1386.149 14.448 0.581 1.455 34.77 83.05 13.15 4.73 7.70 150 11.70CONC Zn 53.597 7.73 1.52 0.92 49.09 456.686 0.815 0.493 26.311 11.46 4.68 11.15 85.53 9.08 11.00### 200 14.20RELAVE 400.535 1.45 0.32 0.13 0.49 640.190 1.282 0.521 1.963 16.06 7.37 11.77 6.38 -200 59.80RATIO 42.19 19.18 9.17 DIFEREN 0.00 0.00 0.78 0.00

TERCER TURNOTMH 544.00 %H2O 8.58 DENSIDAD 1400.00 ING J. Ore



TMH 1632.000 ACUMULADO DEL DIA 1-Mar-08% H2O 8.93 DENSIDAD 1400.00



TMH 1632.00 ACUMULADO MENSUAL A LA FECHA 1-Mar-08% H2O 8.93 DENSIDAD 1400.00



TMH 78866.00 ACUMULADO ANUAL A LA FECHA 1-Mar-08% H2O 8.39 DENSIDAD 1400.00


CABEZA 72252.798 3.28 1.95 0.54 4.83 261623.717 1409.011 391.740 3486.199 100.00 100.00 100.00 100.00 15.84 65 7.91CONC Cu 935.350 41.50 4.15 20.10 10.29 42792.137 38.788 188.022 96.202 16.36 2.75 48.00 2.76 23.52 8.00 100 6.63CONC Pb 1775.680 47.04 56.88 3.35 5.40 92076.329 1009.929 59.541 95.808 35.19 71.68 15.20 2.75 6.84 150 10.64CONC Zn 5847.109 6.01 1.42 1.14 51.14 38742.100 82.976 66.565 2990.249 14.81 5.89 16.99 85.77 8.70 11.00 200 13.40RELAVE 63694.660 1.25 0.44 0.12 0.48 88013.151 277.318 77.537 303.939 33.64 19.68 19.79 8.72 -200 61.41RATIO 77.25 40.69 12.36 DIFEREN 0.00 0.00 -0.02 0.00

CONSUMO DE REACTIVOS Y ACERO (KGS/TMS) A C U M U L A D O 2 , 0 0 7.REACTIVO DIA MES AÑO L E Y E S RECUPERACIONS04Zn 1.009 1.009 0.913 PROD. T.M.S. Ag OZ/TC %Pb % Cu %Zn Ag Pb Cu Zn %FeCNNa 0.168 0.168 0.189 CABEZA 392691.674 3.22 1.81 0.71 5.36 100.00 100.00 100.00 100.00 14.26Z - 11 0.050 0.050 0.047 CONC Cu 6813.931 38.73 7.03 21.78 9.87 20.87 6.75 53.30 3.20 20.41Z - 6 0.034 0.034 0.011 CONC Pb 9628.897 41.64 53.00 4.14 5.94 31.70 71.91 14.32 2.72 7.88MIBC 0.000 0.000 0.000 CONC Zn 35518.091 5.71 1.23 1.14 51.53 16.04 6.14 14.60 86.99 7.87FROTHER - 0.034 0.034 0.034 RELAVE 340665.635 1.17 0.32 0.15 0.44 31.39 15.20 18.06 7.10CAL 0.976 0.976 1.038 RATIO 57.63 40.78 11.06 0.00 0.00 0.29 0.00CuSO4 0.000 0.000 0.325

BISULFITO 0.000 0.000 0.000 A C U M U L A D O 2 , 0 0 6.FOSFAT. 0.017 0.017 0.010 L E Y E S RECUPERACIONTYLOSE 0.017 0.017 0.009 PROD. T.M.S. Ag OZ/TC %Pb % Cu %Zn Ag Pb Cu Zn %FeBICROM. 0.050 0.050 0.029 CABEZA 367826.248 2.67 2.10 0.52 5.78 100.00 100.00 100.00 100.00 13.98CARBON 0.000 0.000 0.001 CONC Cu 3907.372 40.72 7.78 24.44 7.77 16.22 3.94 49.91 1.43 18.79BARRAS Y ACEROS DIA MES AÑO CONC Pb 11127.890 31.84 55.67 2.68 6.04 36.13 80.24 15.56 3.16 7.32

BOLAS 1.1/2" Ø 0.168 0.168 0.177 CONC Zn 36124.783 4.62 0.98 0.87 52.34 17.00 4.57 16.36 88.88 7.05

BOLAS 2" Ø 0.254 0.254 0.223 RELAVE 316685.243 0.95 0.27 0.11 0.44 30.65 11.26 18.43 6.53

BARRAS 3" Ø 0.000 0.000 0.178 RATIO 94.14 33.05 10.18 0.00 0.00 0.26 0.00

CONSUMO DE ENERGIA 2,008 ACUMULADO MENSUAL MINERAL DE COBREDIARIO MENSUAL ANUAL 2007 2006 L E Y E S RECUPERACION

56,680.28 56,680.28 3,277,282.71 16012961.6214`858,612.360 PROD. T.M.S. Ag oz/TC % Pb % Cu % Zn Ag Pb Cu Zn31.28 31.28 31.81 29.65 30.95 INDICE KW/TMS: CABEZA 0.000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

CONC Cu 0.000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

OBSERVACIONES: RELAVE 0.000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

RATIO 0.00 0.00 0.00 0.00 0.00

TMH 1932.000 ACUMULADO DEL DIA 17-Apr-23 CAMP. MC-03-2008-03.% H2O 7.68 DENSIDAD 461.34 MINA YAURICOCHA

L E Y E S CONTENIDOS FINOS RECUPERACION MALLAPROD. T.M.S. Ag OZ/T %Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb Cu Zn %Fe pH MALLA

CABEZA 1783.687 4.14 2.88 0.61 5.47 8147.867 51.459 10.914 97.603 100 100.00 100.00 100.00 4.51 65CONC Cu 24.541 77.76 9.84 24.24 6.16 2103.687 2.416 5.948 1.511 25.82 4.69 54.50 1.55 11.59 2.64 100CONC Pb 71.687 42.89 58.88 1.43 4.45 3388.959 42.207 1.025 3.187 41.59 82.02 9.39 3.27 2.84 150CONC Zn 167.483 4.59 1.14 0.82 51.91 847.933 1.912 1.373 86.938 10.407 3.72 12.58 89.07 1.84 3.62 200RELAVE 1519.975 1.08 0.32 0.17 0.39 1807.288 4.924 2.524 5.966 22.181 9.57 23.13 6.11 -200RATIO 72.68 24.88 10.65 DIFEREN 0 0.00 -0.40 0.00

TMH 33200.00 ACUMULADO MENSUAL A LA FECHA 17-Apr-23 CAMPAÑA : MC-03-2008-03.% H2O 8.58 DENSIDAD 1299.18 M I N A YAURICOCHA

L E Y E S CONTENIDOS FINOS RECUPERACION MALLAPROD. T.M.S. Ag OZ/T %Pb % Cu %Zn ONZ. Ag TM Pb TM Cu TM Zn Ag Pb Cu Zn %Fe pH MALLA

CABEZA 30350.378 3.56 2.19 0.57 4.81 119118.353 664.131 172.456 1460.132 100.00 100.00 100.00 100.00 14.35 65CONC Cu 372.609 60.21 5.33 23.86 9.71 24729.171 19.859 88.907 36.178 20.76 2.99 51.55 2.48 21.71 7.68 100CONC Pb 863.249 41.50 58.04 2.58 5.04 39494.705 501.069 22.293 43.516 33.16 75.45 12.93 2.98 6.73 150CONC Zn 2436.904 5.78 1.36 0.97 51.55 15535.681 33.037 23.726 1256.318 13.04 4.97 13.76 86.04 7.78 10.39 200RELAVE 26677.616 1.34 0.41 0.14 0.47 39358.797 110.166 37.538 124.119 33.04 16.59 21.77 8.50 -200RATIO 81.45 35.16 12.45 DIFEREN 0.00 0.00 0.00 0.00

MC-03-2008-03.YAURICOCHA

MALLA%PESO

2.742.413.664.35

86.85

MC-03-2008-03.YAURICOCHA

MALLA%PESO

7.746.44

10.5612.7162.55

7.75 7.63 8.1113.245

balance diario marzo 2008

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