INTRODUCTION. companies in Asia, The United States, South America and Europe.

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5 INTRODUCTION Doe Run Peru S.R.L. is owned by The Doe Run Company of the US, the world s largest integrated primary lead producer, which also has excellent fabricating and recycling facilities.the acquisition of the La Oroya metallurgical complex from the Peruvian government in October of 1997 marked The Doe Run Company s first venture outside the US and was also the first time the Company's product line was expanded beyond lead to include copper, silver, zinc, gold and other metals. Doe Run Peru s metallurgical complex at La Oroya is located in the Central Andean Highlands of Perú, at 3,775 meters above sea level, and 180 km northeast of the city of Lima, Peru. The complex is regarded to be one of the three largest metallurgical operations in the world. This owes to its operations diversity and large number of processes for the treatment of polymetallic concentrates with high content of impurities and precious metals, which enable it to produce a large variety of refined metals and byproducts. This metallurgical facility is made up of four integrated circuits: copper, lead, zinc and precious metals. Changes have been recently introduced in the aforementioned, aimed at improving Doe Run Peru s processes and operations. At present, The Company produces eleven metals (copper, lead, zinc, silver, bismuth, cadmium and refined indium, gold, selenium powder, tellurium and antimony), as well as eight chemical by-products (sulfuric acid, oleum, sodium bisulfite, copper sulphate, zinc sulphate, zinc powder, arsenic trioxide and silver-zinc concentrate). Doe Run Peru s yearly production capacity is: 70,000 tons of refined copper, 120,000 tons of refined lead, 45,400 tons year of refined zinc, 1,200 tons of refined silver and 2.35 tons of gold bullion. The Company sells its products to customers in the local market and worldwide. companies in Asia, The United States, South America and Europe. Metals processed at the La Oroya complex are shipped to Doe Run Peru's ultimate objective is to keep its customers supplied with high-quality metal products that are consistently pure, at competitive prices, and to deliver them on schedule. The Company s activities are carried out in a safe and environmentally responsible manner, applying state-of-the-art technology and modern management tools. The effectiveness of Doe Run Peru s operations is based on the Company s great endowment of human knowledge and expertise, the vast experience of its workers and the use of information technology and real-time communication. 5 Doe Run Peru works with public consent and strives to maintain good-neighbor relations with the community

6 ADDRESSES DOE RUN PERU S.R.L.: Víctor Andrés Belaúnde N Piso 9 Torre Real No 3- San Isidro - Lima 27- Perú PRESIDENT AND GENERAL MANAGER: Phone Fax VICE PRESIDENT AND TECHNICAL MANAGER: Phone Fax VICE PRESIDENT AND MANAGER OF OPERATIONS : Horacio Zeballos Gamez No La Oroya Junín Perú Phone / Fax COMMERCIAL MANAGEMENT CONCENTRATES / MINERALS: Phone Fax METALS: Phone Fax

7 DOE RUN PERU S COMMERCIAL AGENTS IN OTHER COUNTRIES AGENTS TERRITORY ADDRESS ATTENTION PHONE FAX ANGLO EUROPE Spain, France, Portugal, United Kingdom, Countries to North Europe, Germany, Belgium, Austria, Switzerland and Nordic Countries 34 Grovenor Gardens, London SW1W O AL. United Kingdom. Roberto Pérez Eguren angloeurope2@aol.com 44(0) (0) IMECO Brazil Av.Dos Pinheiros Nr.822, Bairro Fazenda Castelo- Vitazay. CEP Boituva Sao Paulo, Brasil César Gonzáles marcego@uol.com.br (55) (55) ERCO CHILE LTDA Chile Edificio World Trade Center.Av.Tajamar 481 Torre Sur-Oficina 803, Las Condes Santiago - Chile Nueva Tajamar Eduardo Raggio & Eduardo Delgado eraggio@raggio.cl edelgado@raggio.cl (56) (56) METALPE CA. Venezuela. Centro Empresarial Torre Humboldt, Piso 15 Of. 08 Concresa-Prados del Este Caracas-Venezuela. Hugo Muñoz hrmb@telcel.net.ve (58) (58) (58) VICTORIA SRL Italy, Countries of South Europe: Yugoslavia, Grecia and Turqui. Piazza Della Vittoria 10, Genova 16121,GE Italy Paolo Cuneo & Stefano Gallo paolo.cuneo@victoria.ge.it stefano.gallo@victoria.ge.it (39) (39) VILCA LTDA. Colombia Av.Catam Carrera 103, # 25B - 30 piso 2 P.O. Box Santa Fe de Bogotá-Colombia Alvaro Vilá & Roberto Gómez roberto.gomez@vilca.com.co (57) (57) (57) (57)

8 ALPHABETICAL INDEX NUMBER PRODUCT PAGE 8 1 Antimony 9 2 Arsenic Trioxide 12 3 Refined Bismuth 14 4 Cadmium 20 5 Refined Copper Refined Copper (Cathodes) Refined Copper (Wire Bars) 30 6 Copper Sulfate Pentahydrate 32 7 Gold Bullion 34 8 Indium 36 9 Refined Lead Lead with low Antimony Selenium Silver Sulfuric Acid Smoking Sulfuric Acid (Oleum) Tellurium Zinc Zinc Powder Zinc Sulphate Zinc - Silver Concentrate 77

9 ANTIMONY PRODUCT : ANTIMONY BLOCKS PURITY : 97,5 % WEIGHT : Each block, 84 Ib. approx. (36 Kg.) ANALYSIS : The quality of this product can be changed. ELEMENT TYPICAL ANALYSIS MAX IMPURITIES % % Antimony 97,500 96,000 min. Arsenic 0,600 0,92 Sulphur 0,180 0,30 Bismuth 0,150 0,30 Copper 0,030 0,20 Tin 0,020 0,10 Iron 0,080 0,70 Gold Tr. Tr. Silver 0, Lead 1,600 1,80 PACKAGING.- WEIGHT.- MARKS.- Antimony blocks are shipped in palletized bundles of 27 or 36 blocks each. Jute brattice cloth for wrapping (6 ft. wide) and two hard boards sheets (1/8" x 32" x 32") per bundle are utilized to avoid any breakage or loss during handling.- Eight 1/2" (1,3 cm.) sealed steel straps secure the bundle and pallet tighty for easy handling with a fork-lift or crane. Bundles with 27 blocks = 2270 lb. (1030 kg). Bundles with 36 blocks = 3020 lb. (1370 kg). On the package: Antimony Pallet N., Lot N. Gross weight in kg. Net weight in kg. Industria Peruana 9

10 ANTIMONY Tolerance: ± 2.0% 10 DIMENSIONS Units A B C D E F G Inch /2 3 4 cm

11 Tolerance: ± 2.0% DIMENSIONS TYPE With 27 Blocks Units Inch. cm. A B C D E / With 36 Blocks Inch. cm /

12 ARSENIC TRIOXIDE PRODUCT : ARSENIC TRIOXIDE PURITY : 97.0 % ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX IMPURITIES % % Arsenic Trioxide 97,00 96,00 min. Antimony Trioxide 1,00 1,50 Copper 0,12 0,20 Iron 0,08 0,10 Lead 0,10 0,30 Insoluble 0,20 0,50 12 PACKAGING.- WEIGHT.- MARKS.- For exportation, Arsenic Trioxide is packed in 25 gallon ( 95 l) steel drums lined inside with plastic bags. For domestic sale, arsenic trioxide is packed in 55 gallon (208 I) steel drums. In both cases, drum covers are sealed with one rubber ring and one metallic ring. Drums for export from Callao are shipped in palletized bundles of six drums and secured with two 1-1/4" (3,2 cm.) sealed steel straps. 25 gallon drum = 350 Ib. (160 kg). 55 gallon drum = 750 Ib. (340 kg). On the drums: Arsenic Trioxide Poison Gross weight in kg. Net weight in kg. Lot N. Sale N, Drum N. CP- PERÚ MADE IN PERU

13 DRUMS Tolerance: ± 1.0 % DIMENSIONS TYPE Units A B 25 gal. Inch. cm / gal. Inch. cm. 34 3/

14 REFINED BISMUTH PRODUCT : REFINED BISMUTH.- INGOT BARS AND NEEDLES PURITY : 99,9991 % WEIGHT : Ingot Bars: 10,1 Ib approx. (4,58 kg) ANALYSIS: ELEMENT TYPICAL ANALYSIS MAX. IMPURITIE g/t (ppm) g/t (ppm) Bismuth (by difference) 99,9991 % 99,9990 % min. Antimony 1,0 1,0 Copper 0,6 1,0 Iron 0,6 2,0 Nickel 1,0 3,0 Silver 0,2 0,3 Lead 0,6 1,0 Zinc 1,0 1,0 Chlorine < 5,0 5,0 14 PACKAGING Ingot Bars are shipped in two types of wooden boxes lined inside with sealed plastic bags. Boxes type 1 contain 10 ingots and type2 for special requirements contain 216 ingots. Boxes are secured with sealed steel straps; two 1/2" (1,3 cm ) straps are placed on small boxes and two 1 1/4" (3,2 cm) on large ones. 2.- Needles are shipped in steel drums, lined with sealed plastic bags. Drum covers are secured with 4 or 5 round head stove bolts.there are two types of drums; the common (N) with 200 Ib (90,0 kg) of needles and type (M) for special requirement with 1600 Ib (500,0 kg). MARKINGS.- Ingots Bars On the wooden Boxes On the drums CP - PERU (Bottom cast) DOE RUN PERU Bismuth Metal Lot N (Die Stamped) Bismuth metal Gross and Net weight, kg Lot No Box N Lot Nº Gross and Net weight, kg Drum Nº MADE IN PERU MADE IN PERU DOE RUN PERU

15 INGOT BARS Tolerance: ± 1.5 % DIMENSIONS Units A B C D E Inch. 1 7/8 8 1/ / cm

16 REFINED BISMUTH 16 DIMENSIONS TYPE Units A B C D E F 1 Inch. 11 1/ /4 Tolerance:±1.5% cm Inch. 25 1/2 18 3/ /4 14 3/4 Tolerance:±1.5% cm DIMENSIONS TYPE Units A B C M 55 gal. Tolerance: ± 0.5% N 5 gal. Tolerance: ± 0.8% Inch. cm. Inch. cm. 34 1/4 22 7/8 15 1/ /4 9 1/

17 NEEDLES 17

18 REFINED BISMUTH BOXES 18

19 DRUMS M N 19

20 CADMIUM PRODUCT : CADMIUM STICK AND BALLS PURITY : 99,994 % WEIGHT : Stick : 0,331 Ib (0,150 kg) approx. 2" Ø Ball : 1,28 Ib (0,580 kg) average. ANALYSIS: ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES (I) g/t (ppm) g/t (ppm) Cadmium (by difference) 99,994 % 99,990 % min. Antimony <5 10 Arsenic Bismuth 1 1 Copper 2 5 Tin <1 10 Iron 2 10 Indium 1 10 Nickel 3 5 Silver <0.1 1 Lead Thallium 5 15 Zinc < (l)according to ASTM-B ; The minimum permissible cadmium content shall be 99,95% (by difference). PACKAGING Sticks are packed in wooden boxes lined inside with sealed plastic bags, the boxes are nailed and secured with two 1/2" (1,3 cm) sealed steel straps. 2.- Balls are shipped in wooden boxes lined inside with three sealed plastic bags with 30 balls each and secured with two 1/2" (1,3 cm ) sealed steel straps. Each box contains 90 balls with an average weight of 115 Ib (52 Kg).

21 Marking.- On the Boxes Cadmium Sticks or Balls Gross and Net Weigth, kg. Box N Lot N CP PERÚ MADE IN PERÚ Tolerance: % DIMENSIONS TYPE A B Inch. cm. Inch. cm. Sticks 3/ Balls

22 CADMIUM 22 Tolerance: ± 1.0 % DIMENSIONS TYPE SHAPE UNITS A B C 1 Inch. 15 1/ /2 Sticks cm D E F G Balls Inch. cm. 13 3/ / /

23 BOXES 23

24 REFINED COPPER - CATHODES PRODUCT : REFINED COPPER - CATHODES PURITY : 99,975 % (1) ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES (2) g/t (ppm) g/t (ppm) Copper 99,975 % 99,97 % min. Antimony 9 15 Arsenic 2 3 Sulphur Bismuth 1 1 Tin <1 1 Iron 3 10 Nickel <1 1 Oxygen Silver Lead 2 10 Selenium 1 2 Silicon 1 2 Tellurium <1 2 Zinc 2 10 Impurities sum (1) Directly from electrolytic determination of copper. ASTM-E (2) According to ASTM-B-5-00 copper in all shapes shall meet the requirement Cu (Incl. Ag) = 99,90% minimun. MARKINGS: On the package lot. N Package N N of Cathodes Weight Kg/Lb

25 PACKAGES 25

26 REFINED COPPER - CATHODES CATHODES DIMENSIONS TYPE SIZE UNITS A Tolerance: ±2 % Tolerance: ±3 % Tolerance: ±40 % B C FULL HALVES Inch. cm. Inch. cm /4-3/ /4-3/ QUARTERS Inch. cm. 7 1/ /4-3/

27 PACKAGING.- Refined Copper Cathodes are Shipped in packages of three different sizes and are secured with 1 1/4 (3.2 cm) sealed straps. SIZE FULL UNITS DIMENSIONS A Tolerance: ±2% Tolerance: ±15% Tolerance: ±3% Inch cm B C SIZE FULL CHARACTERISTICS Nº OF CATHODES Nº OF STEEL STRAPS 3 27 HALVES Inch. cm HALVES QUARTERS QUARTERS Inch. cm

28 REFINED COPPER - WIRE BARS PRODUCT : REFINED COPPER - WIRE BARS PURITY : 99,97 % WEIGHT : 250 Ib (113 Kg). ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES (1) g/t (ppm) g/t (ppm) 28 Copper 99,97% 99,96 % min Antimony Arsenic 2 3 Sulphur Bismuth 1 1 Tin 1 1 Iron 4 10 Nickel 1 1 Oxygen Silver Lead 2 10 Selenium 1 2 Silicon 1 2 Tellurium 1 2 Zinc 2 10 (1) According to ASTM B-5-00 the copper in all shapes shall meet the requirement Cu (Incl. Ag) = 99,90 % minimum. The shape and dimensions of wire bars are under ASTM B-5-00 specification. * Conductivity: Average 100,3 % IACS. Tolerance: ± 0,5 %

29 Tolerance: ± 1.5 % DIMENSIONS Weight Units A B C D E F G H Rad. I Rad. J Rad. K 250 lb inch / / /2 5/8 113 kg cm ,

30 REFINED COPPER - WIRE BARS PACKAGING: Refined Copper wire bars are packed in bundles with 15 bars per bundle and secured with three 1 1/4 (3,2 cm) sealed steel straps Tolerance: ± 2,0 % 30 MARKS: Wire Bars On the Bundles Top die stamped Lot. N Lot. N Bundle N CP PERU Net weight in Kg. Industria Peruana Av. Bundle Weight lb kg DIMENSIONS A B C inch cm inch cm inch cm

31 PACKAGING: Refined Copper wire bars are packed in bundles with 15 bars per bundle and secured with three 1 1/4 (3,2 cm) sealed steel straps 31

32 COPPER SULPHATE PENTAHYDRATE PRODUCT : CuSO4.5 H20 PURITY : Powder: SO4 = : 37,4 %, Cu : 24,6 % Crystallized: SO4 = : 38,5 %, Cu : 25,0 % ANALYSIS : POWDER - CuSO4.5 H20 CRYSTALLIZED - CuSO4.5 H20 ELEMENT TYPICAL ANALYSIS MAX. IMPTURITIES TYPICAL ANALYSIS MAX. IMPTURITIES (%) (%) (%) (%) Sulphate 37,4 37,0 min 38,5 38,0 min Copper 24,6 24,0 25,0 24,8 min Antimony < 0,01 0,01 < 0,01 0,01 Arsenic 0,07 0,13 0,07 0,13 Bismuth 0,01 0,02 0,01 0,02 Tin < 0,01 0,05 < 0,01 0,05 Iron 0,18 0,23 0,18 0,23 Nickel 0,12 0,15 0,12 0,15 Sulfuric Acid N.D. N.D. N.D. N.D. Impurities Sum. - 2,50-2,5 32 PACKAGING.- Shipped in bulk or in sealed plastic bags in polypropilene bags with a weight of 25 Kg.

33 COPPER SULPHATE 25 kg MARKS: On the bag: DOE RUN PERU Copper Sulphate Industria Peruana PN = 25 kg. Tolerance: ± 2.0 % DIMENSIONS 25 kg Units A B Inch cm

34 GOLD BULLION PRODUCT : GOLD BULLION BARS PURITY : 99,80 % WEIGHT : 360 to 430 troy ounces (11,200-13,400 Kg.). ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) Gold 99,80% 99,75 % min. Bismuth 8 50 Copper Iron Palladium Silver Lead 6 10 Selenium 4 4 Tellurium 1 4 Zinc 5 10 ASTM-B covers refined gold in cast bar form. 34 PACKAGING.- Gold Bullion bars are shipped individually, and each bar is packed in a sealed canvas bag. MARKINGS.- Top side, die stamped Top right hand corner Top Left hand corner Lot N Bar N Industria Peruana Weight in kg. CP PERÚ.

35 FRONT VIEW Tolerance: ±1.0 % DIMENSIONS Units A B C D Inch. 10 1/4 3 1/4 2 1/2 SIDE VIEW 1 1/2 E 9 3/8 35 cm

36 INDIUM PRODUCT : INDIUM INGOTS PURITY : 99,991 % WEIGHT : Ingot : 100 troy ounces (3,110 kg) and 33,3 Troy ounces (1,0 kg) ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) Indium (by difference) 99,991 % 99,990 % Cadmium 2 10 Copper Tin 5 15 Iron 2 10 Nickel Silver <0,1 1 Lead Thallium 4 10 Bismuth 1 5 Zinc PACKAGING.- Each ingot is put into a plastic bag and sealed, and packed in wooden boxes, 10 ingots per box. The boxes are lined inside with corrugated paste board and each two ingots are separated by a sheet of corrugated pasteboard.then the boxes are nailed and secured with two 1/2" (1,3 cm) sealed steel straps. The net weight of each box is 1000 troy ounces ( Kg) approx. 36 MARKINGS.- On the ingots (3kg) On the ingots (1kg) On the Boxes: Bottom cast Bottom cast DOE RUN PERU 99,99 + Indium C P - PERU INDIUM METAL Top die Stamped Industria Peruana Lot N year Lot N INDIO 99,99 + Net Weight in kg. Ingot N Top die Stamped Gross Weight in kg. Year: Lot N year MADE IN PERÚ C P - PERU Ingot N

37 Tolerance: ±1.0 % TYPE Units DIMENSIONS A B C D E 37 3 kg Inch. 7 1/2 7 1/4 cm / / / kg Inch. cm 7 1/2 7 7/16 3/ /

38 INDIUM BOXES Tolerance: ±1.0% 38 TYPE 3 Kg UNITS Inch. cm. DIMENSIONS A B C D E F G /8 1 5/8 4 1/8 2 15/ Kg Inch. cm " / / / /16 7.5

39 BOXES 39

40 REFINED LEAD PRODUCT : REFINED LEAD : INGOTS AND BLOCKS PURITY : 99,997 % WEIGHT : Ingots : 98 Ib approx. (45 kg). Each Block : 2000 Ib approx. (907 Kg.). 40 ANALYSIS : ULTRA PURE LEAD (INGOTS) ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) ELEMENT SPEC. LIMIT. % Lead (by difference) 99,997 % 99,995 % min. Lead Balance Antimony 1 2 Calcium < Bismuth Tin < Copper 2 2 Aluminum < Silver 3 3 Antimony < Thallium <1 2 Arsenic < * As + Sn + Fe + Zn 4 10 Bismuth < Cadmium < Chromium < Copper < Iron < Magnesium < Manganese < Nickel < Selenium < Silicon < Silver < Thallium < Zinc < The quality of refined lead is under BS-EN: specification PACKAGING.- Refined Lead ingots are packed in bundles of 25 ingots each. Ingots are placed in rows of 5. Four 1 1/4" sealed steel straps secure the bundle.the weight of the bundle is 2450 Ib approx. (1125 kg), each bundle is covered with two round of stretch film. Refined Lead blocks are shipped without stretch film. For special shipment six plastic straps of 3/4 inch are used for each package. MARKINGS.- INGOTS BUNDLES BLOCKS-USA BLOCKS -BRASIL Bottom cast Lot N Bottom cast Botton cast CP - PERU Weight in kg Industria Peruana Industria Peruana Bundle N Top view Top die Stamped Lot N Top view Lot N Weight in kg Lot N Block N Weight in kg Block N * To customer requirement, can be included others.

41 Tolerance: ±2.0 % DIMENSIONS Units A B C D E F 41 Inch /4 17 1/4 4 1/4 2 1/4 4 cm

42 REFINED LEAD PACKAGE 42 Tolerance: ± 2.0 % DIMENSIONS UNITS A B C D Inch. 22 1/4 21 3/4 20 1/2 17 5/16 cm

43 PACKAGE 43

44 REFINED LEAD (BLOCK) USA - BRASIL BLOCKS DIMENSIONS 44 TO USA Tolerance: ±4.0% Units A B C D Inch. 1/2 10 1/ /4 cm E F G H I 5 6 1/2 18 1/4 23 3/4 23 3/ BRASIL Tolerance: ±4.0% Inch. cm 5/8 10 1/2 3 3/ / /2 25 1/

45 BLOCKS 45

46 LEAD WITH LOW ANTIMONY PRODUCT : LEAD WITH LOW ANTIMONY PURITY : Blocks : 99,993 % Pb with g/t (ppm) antimony WEIGHT : Each Block : 2000 Ib approx. (907 Kg.). ANALYSIS : ELEMENT TYPICAL ANALYSIS ELEMENT TYPICAL ANALYSIS Blocks; g/t (ppm) Sb g/t (ppm) Blocks: g/t (ppm) Sb g/t (ppm) Lead 99,9930 % Sulfur 5 Antimony 30 Nickel 1 Bismuth 15 Cobalt 1 Copper 2 Chromium 1 Tellurium 1 Zinc 1 Arsenic 1 Iron 1 Silver 3 Selenium 1 Aluminum 1 Tin 1 46 PACKAGING.- MARKINGS.- Lead with low antimony blocks are shipped loose. BLOCKS Lot N Weight in kg Block N

47 Tolerance: ±4.0 % DIMENSIONS Units A B C D E F G H I Inch. 5/8 10 1/2 3 3/ / /2 25 1/4 47 cm

48 SELENIUM POWDER PRODUCT : SELENIUM POWDER PURITY : 99,91% POWDER : Granular precipitate pulverized to mesh (99,5 %). 48 ANALYSIS: ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) Selenium (by difference) 99,91 % 99,80 % min Aluminum Antimony 5 20 Arsenic Bismuth 8 25 Cadmium 1 2 Calcium Copper 4 40 Tin 1 5 Iron Magnesium 5 50 Nickel 5 5 Silver 7 50 Lead Silicon Thallium 1 1 Tellurium Zinc Mercury <20 20 PACKAGING.- Selenium Powder is packed in steel drums lined inside with plastic bags. Drum tops are pressure sealed. Six drums are packed in a wooden crate and secured with two 1 1/4" (3,2 cm) sealed steel straps. WEIGHT- Each drum:88 Ib approx. Net weight (40 kg.). 91 Ib approx. Gross weight (41,4 kg:).

49 DRUMS POWDER MARKS: On the Drum Commercial Selenium MADE IN PERU DOE RUN PERU Lot. N Drum N Net. weight in kg Gross wieght in kg Tolerance: ±1.0 % DIMENSIONS UNITS A B Inch. 13 3/8 12 cm

50 SELENIUM POWDER WOODEN CRATES Tolerance: ± 2.0 % 50 MARKS: Wooden Crates Commercial Selenium, Lot. N, Tare in kg. Drum N DOE RUN PERU DIMENSIONS Units A B C D Inch cm

51 WOODEN CRATES 51

52 SILVER PRODUCT : REFINED SILVER : BARS, PLATES AND GRANULATED METAL PURITY : Refined Silver : 99,996 % WEIGHT : Refined Silver : Bars 1050 troy ounces approx. (32,7 Kg); Plates 283 troy ounces approx. (8,8 Kg) ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) Silver (by difference) 99,996 % 99,990 min. Bismuth 1 2 Copper Iron 3 6 Gold 5 9 Lead 1 2 Selenium 1 3 Tellurium 1 3 The specification ASTM - B covers the refined silver. 52 PACKAGING.- 1. Bars and plates of refined silver are shipped to Callao in steel coffers, the covers are fastened with two padlocks. The bars for export from Callao are shipped in palletized bundles of either three, six, eight or 24 bars. Palletized can be done also in La Oroya. 2. The granulated metal is packed in steel drums in 10 sealed plastic bags with 322 troy ounces (10,0 kg) each bag, the cover are fastened with four stoves bolts and four welding points MARKINGS.- 1. BARS Bottom Cast: INDUSTRIA PERUANA 2. PLATES On the drums Top die stamped: Top die stamped : DOE RUN PERU La Oroya Division Left hand corner: 9999 CP PERU Lot N Plate N CP- PERÚ Fine silver granulated Right hand corner: Lot N Bar N Weight in kg. MADE IN PERU Weight in troy ounces Industria Peruana. Net W. kg. Net W. troy onz Gross W. kg Lot No Drum No

53 Tolerance: ±3.5 % Tolerance: ±3.5 % DIMENSIONS OF THE BARS DIMENSIONS OF THE PLATES UNITS A B C D E A B C Inch /4 4 5 Inch. cm. Inch. cm. Inch. cm. 53 cm , / / /

54 SILVER 54 Tolerance: ±2.0 % FOR BARS AND PLATES DIMENSIONS Units A B C D Inch / FOR GRANULATED SILVER Tolerance: ±2.0 % DIMENSIONS Units A B C Inch /4 9 1/4 cm cm

55 COFFERS 55

56 SILVER PALLET 56 MARKS: On the Pallet Lot. N Pallet N Tolerance: ±2.0 % DIMENSIONS Units A B C D Inch cm

57 GRANULATED SILVER DRUMS 57

58 SULFURIC ACID PRODUCT : SULFURIC ACID: H2SO4 PURITY : 98,5%, H2SO4 ANALYSIS : 58 ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) Sulfur Acid 98,5 % 98,5 % min. Antimony 0,2 <1 Arsenic 1 2 Chlorine 0,3 1 Copper 0,4 1 Iron Manganese 0,20 1 Nickel <0,1 1 Lead 5 20 Selenium 0,1 1 Zinc 1 2 Nitrates 2 2 Calcination Residue Impurities sum 1,5 % 1,5 % Sulfuric Acid is shipped in special railroad tank cars or tank trucks.

59 CISTERN TRUCK 59

60 SMOKING SULFURIC ACID - OLEUM PRODUCT : OLEUM PURITY : 105,6 % EQUIV. H2SO4 : 23,0 % SO3 FREE ANALYSIS : 60 ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) Sulfur Trioxide (SO3) Free 23,0 % 21,0 % min. Antimony 0,2 0,3 Arsenic 0,1 0,5 Chlorine 0,3 1,5 Copper 0,5 1 Iron Manganese 0,4 1,0 Nickel 0,2 1,0 Lead 0,6 15 Selenium <1,0 1,2 Zinc 0,7 1,2 Nitrates - 2,0 Calcinations Residue "Oleum" is shipped in special railroad tank cars or tank trucks.

61 CISTERN TRUCK 61

62 TELLURIUM PRODUCT : TELLURIUM STICKS PURITY : 99,94 % WEIGHT : Each stick : 2 Ib approx. (0,91 Kg) ; half stick: 1 Lb approx. ( 0,45 kg). ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX IMPURITIES g/t (ppm) g/t (ppm) Tellurium (by Difference) 99,94% 99,80 % min Aluminum 1 10 Antimony 1 1 Bismuth Copper Cadmium 1 1 Tin <1 1 Iron Silver Lead Selenium Mercury < PACKAGING.- WEIGHT- Tellurium sticks are individually wrapped in Kraft paper and in groups of six are put into plastic bags and packed in steel drums of 5 gallon capacity. Drum covers are pressure sealed. Six drums are packed in a wooden crate, and secured with two 1 1/4" (3,2 cm) sealed steel straps. Each drum: 75 sticks (150 half stick): 154 Ib approx. Net (70 kg) 158 Ib approx. Gross (72 kg).

63 Tolerance: ±2.0 % Type of Sticks Inch. DIMENSIONS A B cm. Inch. cm lb 1 1/ / lb 1 1/

64 TELLURIUM DRUMS 64 MARKS: On the drum Commercial Tellurium MADE IN PERU DOE RUN PERU Net. weight in kg. Gross weight in kg. Lot. N Drum N Tolerance: ±2.0 % DIMENSIONS UNITS A B Inch. 13 3/8 12 cm

65 MARKS: Wooden Crates Commercial Tellurium, Lot. N Tare in kg. Drum N DOE RUN PERU Tolerance: ± 2.0 % DIMENSIONS Units A B C D Inch. 26 1/4 16 3/ E 4 F 2 65 cm

66 ZINC PRODUCT : REFINED ZINC : SLABS, 2" Ø BALLS PURITY : 99,996 % WEIGHT : Foot Slabs: 61,6 lbs approx. ( 28 kg) Plain Slabs: 62,7 lbs approx. ( 28,5 kg) 2" Ø Ball : 1 lb average (0,45 kg) ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES g/t (ppm) g/t (ppm) Zinc (by difference) 99,996% 99,990 % min Lead Copper 8 10 (1) Cadmium 3 30 Iron 5 30 Tin <1 (2) 66 The quality of refined zinc is Special High Grade "Good delivery (99,995+ %) and is under BS-EN Specification. (1) Value that in total impurities shall not exceed 100 ppm. (2) Tin in Special High-Grade shall not exceed 10 ppm. PACKAGING.- Refined Zinc slabs are packed in bundles of 4 foot slabs and 48 plain slabs. Four 1 1/4" sealed steel straps secure the bundle. The weight of the bundle is Ib approx. (1 430 kg). Zinc balls are placed in polypropylene bags that are sealed and then packed in cardboard boxes, weighing an average of 25 kg per box. Pallet Packaging : 40 boxes with a net weight of kg of zinc balls are placed on a pallet, which is finally covered with 4 layers of stretch film.

67 67 MARKS: Bottom Cast: Industria CP Peruana 99,995 + PERU 99,995+

68 ZINC FOOT SLABS MARKS: Bottom Cast: Industria Peruana 99, DIMENSIONS Units A B C D E F G H I J Inch. 18 3/ /4 3 1/ /4 3 7/8 9 1/4 7 3/4 17 1/4 cm

69 PACKAGE Tolerance: ±2.0 % DIMENSIONS 69 MARKS: On the package: Lot. N Package N Weight in kg. Units Inch. cm. A 18 1/ B C /

70 ZINC BALLS PACKAGE A B D C 70 MARKS: On the package: ZINC BALLS Lot. N Net. weight in kg. Gross weight in kg. Purity: Pallet N Tolerance: ±1.0 % DIMENSIONS SHAPE Units A Inch. 2 BALLS cm. 5.1 Tolerance: ±2.0 % DIMENSIONS Units A B C Inch. 22 1/2 25 3/5 45 1/3 cm D 4 3/4 12

71 BALLS 71

72 ZINC POWDER PRODUCT : ZINC POWDER PURITY : Metallic Zinc : 94,0 %, Total Zinc : 98,0 % ANALYSIS : ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES % % Metallic / Zinc 94,0 92,0 min. Total / Zinc 98,0 96,0 min Cadmium 0,01 0,05 Copper 0,01 0,02 Iron 0,01 0,05 lead 0,01 0,10 DOE RUN PERÚ TYLER STANDARD MINIMUN % MAX. % TYPIC % SERIES N. µm ,01 0,05 0, ,03 0,10 0, ,30 1,50 0, ,65 99,85 PACKAGING.- The zinc powder is packed in steel drums lined with sealed plastic bags. Drum covers are secured with 5 round head stove bolts.

73 MARKS: On the Drum: CP-PERU Weight: Net and gross in kg. Drum N, Lot. N ZINC POWDER MADE IN PERU Tolerance: ±2.0 % DIMENSIONS Units A B C Inch cm

74 ZINC SULPHATE PRODUCT : ZINC SULPHATE MONOHYDRATE PURITY : 35,0 % Zn ; 53,9 % SO4 = ANALYSIS : Zn SO4. H2O - (Mining Use) Zn SO4. H2O (Agricultural Use) ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES TYPICAL ANALYSIS MAX. IMPURITIES (%) (%) (%) (%) Sulphate 53,9 53,0 min. 53,5 53,0 min. Zinc 34,0 32,0 min. 33,5 32,0 min. Cadmium 0,15 0,45 10 ppm 20 ppm Copper 0,01 0,45 10 ppm 20 ppm Iron 0,08 0,30 50 ppm 100 ppm Lead 0,01 0,05 60 ppm 100 ppm Ignition Losses 11,4 11,4 11,0 11,4 Carbon 0,20 0,60 0,2 0,60 Insolubles 0,35 0,60 0,35 0,60 74 PACKAGING.- MARKS.- Shipped in sealed plastic bags in a polypropylene bag with 50 Kg and 1000 Kg. ON THE POLYPROPYLENE BAG (50 kg) ON THE BIG BAGS (1000 kg) DOE RUN PERU DOE RUN PERU Zinc Sulphate Zinc sulphate MADE IN PERU Gross Wt. Kg / Net Wt. kg R.I. 837 Bag N / Lot N MADE IN PERU R.I. 837

75 PACKAGE Tolerance: ±2.0 % 75 DIMENSIONS Units A B Inch cm

76 ZINC SULPHATE BIG BAG C B A 76 DIMENSIONS UNITS A B C inch. 39,4 39,4 44,5 cm

77 Zn/Ag CONCENTRATE Shipped: ELEMENT TYPICAL ANALYSIS MAX. IMPURITIES % % Zinc 53,31 45,00 min. Silver 4900 g/t 3520 g/t min. Lead 0,32 0,32 Copper 0,63 0,63 Sulphur 28,50 28,50 Iron 9,00 15,00 Arsenic 0,06 0,30 Antimony 0,02 0,02 Bismuth 0,01 0,01 Nickel 4,00 g/t 4,00 g/t Cobalt 5,00 g/t 5,00 g/t Cadmium 0,11 0,11 Selenium 6,00 g/t 6,00 g/t Gold 0,80 g/t 0,80 g/t Insoluble 2,70 2,70 Alumina 0,30 0,30 Silicon (SiO2) 2,40 3,50 Lime 0,50 0,50 Zinc-Silver concentrates are shipped in bulk in railroad hoppers or by track. 77

78 DOE RUN PERU was awarded the safety record prize in the Independence Room of the Sheraton Hotel, for the second consecutive year. Offices within La Oroya Metallurgical Complex. Ecological park. John T. Ryan Trophy testimony of the permanent safety efforts and practices of the entire family of DOE RUN PERU

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