COAL IN THE STATES OF RIO GRANDE DO SUL AND SANTA CATARINA

Transcription

1 República Federativa do Brasil Ministério de Minas e Energia Companhia de Pesquisa de Recursos Minerais Diretoria de Geologia e Recursos Minerais Departamento de Recursos Minerais COAL IN THE STATES OF RIO GRANDE DO SUL AND SANTA CATARINA Telmo Süffert Superintendência Regional de Porto Alegre Agosto

2 TECHNICAL TEAM Luiz Fernando Fontes de Albuquerque Geology and Mineral Resources Manager Sérgio José Romanini Mineral Resources Supervisor Luís Edmundo Giffoni Editing Execution Mining Engineer Telmo Süffert English Version Helena Maria Azevedo Alves Typing Cláudia Rejane de Barros Prates Gualtério Souto Cássia Digitizing/Illustration Ademir Evandro Flores Informe de Recursos Minerais Série Oportunidades Minerais - Exame Atualizado de Projetos, n.º 22 S946 Süffert, Telmo Ficha Catalográfica Coal in the States of Rio Grande do Sul and Santa Catarina - Porto Alegre : CPRM, p. : il. - (Informe de Recursos Minerais, Série Oportunidades Minerais - Exame Atualizado de Projetos, n.º 22) 1. Geologia Econômica - Carvão - Rio Grande do Sul - Santa Catarina 2. Geologia - Carvão - Brasil - Sul. I. Título CDU (816.4/.5) CDD

3 Presentation The Informe de Recursos Minerais is a publication that aims to order and divulge the results of the technical activities that CPRM carries out in the fields of economic geology, prospection, exploration and mineral economics. These data are issued as maps, papers and reports. According to the subject there are eight series of publications, named below. The complete list of published editions is presented in the last pages of this report. 1) Série Metais do Grupo da Platina e Associados; (Metals of the Platinum Group and Related Metals Series) 2) Série Mapas Temáticos do Ouro, Escala 1: ; (Thematic Maps for Gold Scale 1: Series) 3) Série Ouro - Informes Gerais; (Gold General Information Series) 4) Série Insumos Minerais para Agricultura; (Mineral Inputs for Agriculture Series) 5) Série Pedras Preciosas; (Precious Stones Series) 6) Série Economia Mineral; (Mineral Economy Series) 7) Série Oportunidades Minerais - Exame Atualizado de Projetos; (Mineral Opportunities Up-Dated Review of Project Series 8) Série Diversos. (Sundry Series) Please contact directly the Superintendência Regional de Porto Alegre or the Divisão de Documentação Técnica, in Rio de Janeiro to ask for copies of this issue, using the addresses listed in the back cover.

4 1 - Introduction Coal resources identified in Brazil exceed 32 billion metric tons and are located in the region covered by the gondwanic sequence rocks of the Paraná Basin, in the States of Rio Grande do Sul (RS) and Santa Catarina (SC) and, secondarily, in the States of Paraná (PR) and São Paulo (SP). In Brazil, there are eight major deposits: Santa Terezinha, Chico Lomã, Charqueadas, Leão, Iruí, Capané and Candiota (all in RS) and Sul-Catarinense (in SC). Companhia de Pesquisa de Recursos Minerais CPRM, which carried out intensive mineral research on coal in the 70 s and 80 s, as Brazilian Geological Survey, owns 105 Prospection Permits, corresponding to an equal number of areas located in seven of those deposits. In this review, CPRM presents the areas with the most favorable exploitation possibilities, considering the quantity and quality of coal reserves, mining facilities, location, infra-structure and transportation paths. So, their mineral rights are valuable. Consequently, 48 areas have been selected, grouped in thirteen blocks in six of the eight great deposits (see Annex). Several of the blocks may have more than one mine, thus permitting their negotiation with more than one interested party. Neighboring areas to those presented herein and not included in this document, are liable to be aggregated to them to form marginal mineral units thus allowing greater utilization of the deposits. In each block, the most relevant aspects are taken into account. The reserves are presented by each granted area (by Departamento Nacional da Produção Mineral DNPM Process number). The reserves, calculated for each Mining Unit, Block or Prospection Permit, are summarized in Table I. 1

5 Informe de Recursos Minerais Table I - Calculated reserves shown in the Final Exploration Reports Deposit Item Mining Unit, Block or Area Candiota Seival II Arroio da Pitangueira Arroio dos Vimes Estância da Glória MD + ID + IF 383, , , ,463 Reserves (in 10 3 metric tons) MD + ID + IF in Sections with low Overburden Measured OBS: 136, ,116 56,020 12, , , ,411 76,000 Capané 4.1 Arroio Capané 42,192 27,912 11,811 (xx) Iruí Leão Chico Lomã Cordilheira Dom Marcos C, D e E G Leão Leste D Adjacents Areas 113,662 4, , , , ,957 45,758 15,655 1, ,260 79,410 24, ,038 3,422 Sul-Catarinense 8.1 Morro dos Conventos 55, ,603 (x) (x) (x) (x) 1,250 (xxx) Obs: MD Measured Reserve ID Indicated Reserve IF Inferred Reserve (x) Overburden up to 50m (xx) According to Pre-Feasibility Study (xxx) Overburden up to 30m 2

6 2 - Selected Blocks The deposits are presented in geographical order, from SW to NE, in accordance with Figures 1 and 2: CANDIOTA Seival II, Arroio da Pitangueira, Arroio dos Vimes and Estância da Glória Blocks; IRUÍ Cordilheira Block and Dom Marcos Area; CAPANÉ Arroio Capané Block; LEÃO C, D and E Mining Units, G Mining Unit and Leão Leste Block; CHICO LOMÃ D Mining Unit ; SUL-CATARINENSE Morro dos Conventos Mining Unit. N P A R A N Á 26º00' 50º00' W Rio Negro JOINVILE Rio Uruguai XAPECÓ S A N T A C A T A R I N A BLUMENAU FLORIANÓPOLIS Rio Uruguai SANTO ÂNGELO PASSO FUNDO LAJES SUL-CATARINENSE 1 Block Rio Pelotas Rio Jacuí CRICIÚMA URUGUAIANA Rio Quaraí 56º00' U R U G U A I 32º00' S SANTA MARIA BAGÉ R I O G R A N D E D O S U L CACHOEIRA DO SUL CAPANÉ 1 Block CANDIOTA 4 Blocks CHARQUEADAS IRUÍ 2 Blocks PELOTAS LEÃO 3 Blocks RIO GRANDE CHICO LOMÃ 2 Blocks LAGOA DOS PATOS CAXIAS DO SUL SANTA TEREZINHA PORTO ALEGRE A T L A N T I C O C E A N km Figure 1 - SITUATION OF THE MAIN COAL DEPOSITS - RIO GRANDE DO SUL AND SANTA CATARINA 3

7 Informe de Recursos Minerais BAGÉ CANDIOTA DEPOSIT A CAPANÉ DEPOSIT Cachoeira do Sul IRUÍ DEPOSIT F Pantano Grande do Sul D CANDIOTA B E ARROIO CAPANÉ BLOCK G C E F G CORDILHEIRA BLOCK DOM MARCOS AREA 10 km BRASIL URUGUAI 10 km A SEIVAL BLOCK B ARROIO DA PITANGUEIRA BLOCK C ESTÂNCIA DA GLÓRIA AREA D ARROIO DOS VIMES BLOCK H "C","D" e "E" MINING UNITS I "G" MINING UNIT J LEÃO LESTE BLOCK RIO PARDO H I J MINAS DO LEÃO SUL-CATARINENSE DEPOSIT LEÃO DEPOSIT 10 km JAZIDA DE CHICO LOMÃ RS SC Criciúma Santo Antônio da Patrulha L LAGOA DOS BARROS Araranguá K "D" MINING UNIT K M L ADJACENT AREAS 10 km SC RS ATLANTIC OCEAN 10 km Coal deposit Area available for negotiation M MORRO DOS CONVENTOS MINING UNIT Town of regional importance Figure 2 - SITUATION OF THE BLOCKS PRESENTED 4

8 3 - Candiota Deposit 3.1 Seival II Block Situation As shown in Figure 3, this Block lies at the northeastern border of the Candiota deposit, Municipality of Candiota, its center being about 12 km to the north of the town of Candiota. It includes four DNPM prospecting areas, Processes n /79, /79, /79 and /79. The Exploration Report was approved by the Ministry of Mines and Energy (MME). The block is crossed by BR-292 road and by railroad Status of Knowledge 34 holes have been drilled in the areas, in addition to several others in their vicinity, with an average spacing of about 1 km in the sectors considered positive for coal. So, more than 99% of the reserves were asserted to the Measured and Indicated categories. The work carried out and the amount of ore testing and assays are sufficient to evaluate extraction conditions and select the most favorable sectors; of course, detailed planning of open pit exploitation will need closer drilling grid Deposit Features In the Candiota Deposit, the main seam is the Candiota Seam, divided in two beds Candiota Upper Bed (Candiota Banco Superior - CBS) and Candiota Lower Bed (Candiota Banco Inferior CBI), by a siltic bed. Besides Candiota Seam, there are up to nine upper coal seams (from CS 1 to CS 9 in ascending order) and up to nine lower seams (from CI 1 up to CI 9 in descending order). In the Seival II Block, there is coal from CS 7 seam to CI 5 seam, within an usual vertical interval of 30 m to 35 m. Of these, the CS 3, CS 1 and CI 5 seams are only represented by thin beds; the estimated reserves for each one of the remaining ten coal seams run between 10 Mt and 80 Mt (million of metric tons). In a preliminary analysis, an overburden 50-m isopach line has been drawn over the CBS seam. The sectors under smaller thickenesses, corresponding to 78.5% of the reserves, have been considered potentially exploitable by open pit methods. Of course, the method and exploitation equipment will determine the overburden/ore maximum ratio, the minimum exploitable thickness of each coal seam and the eventual feasibility of selective mining methods Reserves in situ Table II summarizes coal reserves presented in the Final Exploration Report and approved by DNPM. In addition to the classification by area and by category, the sectors potentially exploitable by open pit methods (overburden thinner than 50 m) are also described. Detailed tables are found in the Final Exploration Report. Table II - Reserves in the Seival II Block DNPM Overburden Reserves in 10 3 metric tons Process n. Measured Indicated Inferred Total / /79 < 50 m > 50 m 67,239 30, ,638 36,498 0,278 0, ,155 67,122 SUM 97, ,136 0, ,277 < 50 m > 50 m 19,062 7,384 57,205 0,000 1,896 0,000 78,163 7,384 SUM 26,446 57,205 1,896 85, /79 < 50 m 5,721 9,631 0,564 15,916 SUM 5,721 9,631 0,564 15, /79 < 50 m 6,232 27,856 0,085 34,173 SUM 6,232 27,856 0,085 34,173 TOTAL < 50 m > 50 m 98,254 38, ,330 36,498 2,823 0, ,407 74,506 SUM 136, ,828 2, ,913 5

9 32º00' S Informe de Recursos Minerais 53º50' W BAGÉ BR-293 HULHA NEGRA SEIVAL Rio Grande do Sul Porto Alegre BR-153 CANDIOTA ACEGUÁ Arr. Jaguarão Chico BRASIL Rio Jaguarão Arr. Candiota 10 km PEDRAS ALTAS Index Map URUGUAI Location Map 53º40' W / /79 Sanga Funda Candiota Arr. Seival /79 Arr /79 Br SEIVAL º30' S km Simplified Map of the Deposit Town Paved road Unpaved road Coal deposit Railroad Rivers m isopach overburden over the Candiota seam CNMC mine Area avaliable for negotiation Thermoeletric power plant Figure 3 - CANDIOTA DEPOSIT - SEIVAL II BLOCK 6

10 Série Oportunidades Minerais - Exame Atualizado de Projeto, 22 From the reserves under overburden thinner than 50 m, the most important portions are in the CBS seam (upper level of the Candiota Seam), with 59,168 Mt, or 19,1% of the total, and in the CS 7 coal seam, with 41,572 Mt, or 13,4% of the total. The remaining reserves are in the CS 6, CS 5, CS 4, CS 2, CBI, CI 2, CI 3 and CI 4 seams Quality Similarly to the remainder of the Candiota Deposit, the coal in Seival II Block fits in the category of Non-Coking High Volatile C Bituminous Coal of the ASTM classification. Its ROM has an average ash content close to 52%, sulfur content below 2%, and High Calorific Value (on dry basis) close to 3,300 cal/g. Similarly to Companhia Riograndense de Mineração CRM and Companhia Nacional de Mineração Candiota CNMC mines, both nearby and in the same deposit, washing of the coal in the Block under study is possible, in order to obtain more valuable products: a clean coal, averaging ash content from 35% to 40% (with yields above 40% in the seams CS 7, CS 4 and CI 3 ) and a middling with quality similar to the product burned in the local thermoelectric power plants. The theoretical yields vary from seam to seam; referential values, calculated from the average of the core drilling assay results, are shown in Table III. Table III Theoretical Yelds based on the Total Coal Seams Coal Seam Yields C35 C50 CS7 46% 93% CS6 23% 67% CS 5 13% 44% CS 4 47% 100% CS2 32% 73% CBS 32% 87% CBI 36% 85% CI2 13% 44% CI3 42% 95% CI4 30% 72% Utilization The coal now mined by CRM is used in its raw form in the Presidente Médici thermoelectric power plant. The coal produced by CNMC, also in raw form, is used in the cement manufacture. Conclusive studies on a industrial scale already exist, showing the technical and economic feasibility of washing the coal of the Candiota deposit, thus obtaining a better product, with 3,700 to 4,200 cal/g, for a regional market and a middling of about 3,300 cal/g to be used in the cement industries nearby or in the Presidente Médici thermoelectric power plant. CRM has a 100t/h of ROM washing plant and concluded a project for a larger heavy media cyclone plant. Coal of the Seival II Block may be used for the same purposes, with variable yields according to the selected seams and sectors Division of the Area A medium/large capacity open pit mine needs from 30 to 100 million tons of reserves. Each of the four Prospection Permits under study has, in an increasing order, 15, 34, 95 and 248 million tons of reserves of coal. The comparison of these numbers results in the difficulty in dividing the Block into technically and economically coherent Mining Units within the division by Prospection Permits. Thus, the eventual division of the Block depends on the amount of reserves required by the interested miner and on DNPM s approval, authorizing the sub-division of the prospected areas. 3.2 Arroio da Pitangueira Block Situation As shown in Figure 4, this block lies at the eastern border of the Candiota deposit. It includes parts of the municipalities of Hulha Negra and Pinheiro Machado. However, the nearest urban center is the recently emancipated town of Candiota, located 10 km north of the Block. 7

11 31º39' S 32º00' S Informe de Recursos Minerais 53º50' W BAGÉ BR-293 HULHA NEGRA Rio Grande do Sul SEIVAL Porto Alegre BR-153 CANDIOTA Index Map ACEGUÁ Arr. Jaguarão Chico BRASIL Rio Jaguarão Arr. Candiota 10 km PEDRAS ALTAS URUGUAI 53º40' W Location Map Arr. Poacá - + Arr.Candiota / / / km Simplified Map of the Deposit Town Paved road Unpaved road Railroad Rivers Area avaliable for negotiation + - Coal deposit 50 m isopach overburden over the Candiota seam CNMC mine Thermoeletric power plant Figure 4 - CANDIOTA DEPOSIT - ARROIO DA PITANGUEIRA BLOCK 8

12 Série Oportunidades Minerais - Exame Atualizado de Projeto, 22 This town is accessed by paved highways and by railroad from Bagé and Pelotas; unpaved municipal roads make local access. Three prospection areas form the Block, corresponding to DNPM Processes n /74, /74 and /74. The Exploration Report was approved by the Ministry of Mines and Energy MME Status of Knowledge Twenty drillings have been carried out in the prospected areas, with an average spacing of 1 km in the sections of smaller depth. As a result, the Exploration Report provided to DNPM, in the sector with an overburden with less than 50m over the Candiota Seam, defined more than 98% of the reserves within the categories Measured + Indicated; in the deeper sectors this proportion decreases to 91%. Later on, ten more holes were drilled, in order to obtain more details about the deposit. The research done and the amount of technical tests and assays are sufficient to evaluate extraction conditions and select the most favorable sectors; of course, the detailed planning for an open pit mine will need closer drilling Deposit Features In the Arroio da Pitangueira Block, seams CS 5 to CI 7 are present, in a vertical interval of about 30 m. Of these, thin beds represent the majority; only seams CS 2, CBS, CBI, CI 2, CI 3 and CI 4 have sufficient thickness to justify exploitation. Due to the reduced thickness of the intercalated barren horizons, the groups CBS + CBI and CI 3 + CI 4 have been assembled for calculation of their reserves and will probably also be assembled in mining. Normal faults, with small displacement, are present and divide the SSW dipping homocline in echelon blocks. In a preliminary analysis, a 50-m thickness overburden isopach line has been drawn over the CBS coal seam. The sectors with smaller overburden thickness, corresponding to 61.2% of the reserves, have been considered potentially exploitable by open pit methods. Of course, the method and exploitation equipment will determine the overburden/ore ratio maximum values, the minimum exploitable thickness of each coal seam and, perhaps, choose a selective mining method. At the pre-feasibility stage, delimitation of open pit exploitable sections can be more precisely established Reserves in situ Calculated reserves in the Final Exploration Report were subject to small changes by DNPM, but such changes apparently result from errors in the transcription of the data. The calculated values presented in the Final Exploration Report, detailed by categories (measured/indicated/inferred), by Prospection Permit (3) and by overburden thickness (< 50m and >50m), are shown in Table IV. The total is 465,672 Mt. The reserves, according to DNPM s approval of the Exploration Report, are shown in Table V. The total is 467,056 Mt. 9

13 Informe de Recursos Minerais DNPM Process n / / /74 Total Table IV - Reserves in the Arroio da Pitangueira Block calculated in the Final Exploration Report Overburden Reserves in 10 3 metric tons Measured Indicated Inferred Total < 50 m 51, ,664 0, ,213 > 50 m 0,000 20,842 1,678 22,520 Sum 51, ,506 1, ,733 < 50 m 9,418 42,845 2,368 54,631 > 50 m 19,612 67,356 5,261 92,229 Sum 29, ,201 7, ,860 < 50 m 21,480 46,330 3,256 71,066 > 50 m 12,057 44,402 9,554 66,013 Sum 33,537 90,732 12, ,079 < 50 m 82, ,839 5, ,910 > 50 m 31, ,600 16, ,762 Sum 114, ,439 22, ,672 Table V - Reserves in the Arroio da Pitangueira Block approved by the DNPM DNPM Reserves in 10 3 metric tons Process n. Measured Indicated Inferred Total /74 51, ,506 1, /74 29, ,201 7, /74 33,537 90,732 13, Total The differences between the two calculations were: - With regard to the indicated reserves for the area n /75, in the Final Exploration Report the total is 110,201,000 tons and the total approved by DNPM was 111,201,000 tons, with an exact difference of 1,000,000 tons. - With regard to the indicated reserves for the area n /75, in the Final Exploration Report the total is 12,810,000 tons and the total approved by DNPM was 13,194,000 tons, with an exact difference of 384,000 tons. Addition of the two differences makes the total of the approved reserves for the group of the three areas 1,384,000 tons higher than the total of the calculated reserves shown in the Final Exploration Report Mt, or 65.7% of the reserves under an overburden thinner than 50m, are in the two beds of the Candiota seam (CBS + CBI); the remaining reserves for open pit mines are in the seams CS 2, CI 2, CI 3 and CI Quality Similarly to the remainder of the Can- diota Deposit, the coal in the Arroio da Pitangueira Block fits in the category of Non- Coking High-Volatile C Bituminous Coal of the ASTM classification. Coal of the seams CBS + CBI will probably have a better average quality than CRM s present product, with an average ash content near 48%; the coal of the seams CI 2 and CI 3 + CI 4 will probably have an average close to 54%. The Calorific Value, inversely to the ash contents, will probably be between 3,100 and 3,500 cal/g; the sulfur contents, below 2% in the ROMs, will probably decrease to less than 1% in the washed products. Theoretical yields vary from seam to seam; referential values, estimated from the averages of the drilling core assays are shown in Table VI. Table VI - Theoretical yields based on Total Coal Seams Coal Seams Yields C 35 C 50 CBS + CBI (1) 41% 100% CI2 no data available 75% CI3 + CI4 (2) 38% 85% Obs. (1): Barren horizon between seams not considered (2): Barren horizon between seams considered 10

14 Série Oportunidades Minerais - Exame Atualizado de Projeto, Utilization Coal of the Arroio da Pitangueira Block can have the same uses mentioned in item 3.1.6, with variable yields depending on the selected seams and sectors Division This block can be split in two or three sub-blocks, in a similar way as that outlined in item Arroio dos Vimes Block As shown in Figure 5, this Block lies at the western border of the Candiota Deposit and includes eleven prospecting areas. The Report presented was approved DNPM Process n / / /84 Total by the Ministry of Mines and Energy. Of these areas, three, corresponding to Processes n /84, /84 and /84, contain coal under low overburden. The reserves of these three priority areas have been calculated separating the parts under an overburden thinner than 50m (potentially exploitable by open pit methods) from the deeper strips (whose exploitation is foreseen by underground methods). The calculated values presented in the Final Exploration Report, amounting to Mt of coal in the seam, are summarized in Table VII: Table VII - Reserves in the Arroio dos Vimes Block calculated in the Final Exploration Report Overburden Reserves in 10 3 metric tons Measured Indicated Inferred Total < 50 m 0,402 1,677 0,000 2,079 > 50 m 8,978 83,072 67, ,294 Sum 9,380 84,749 67, ,373 < 50 m 14,848 63,142 0,000 77,990 > 50 m 8,731 76,324 42, ,293 Sum 23, ,466 42, ,283 < 50 m 15,329 35,013 0,000 50,342 > 50 m 7,732 52,264 13,652 73,648 Sum 23,061 87,277 13, ,990 < 50 m 30,579 99,832 0, ,411 > 50 m 25, , , ,235 Sum 56, , , ,646 Of these 130,411 Mt below <50 m- thick overburden, 120,282 Mt match to the Candiota coal seam and the remaining to the CI 2, CI 3 and CI 4 seams. Based on drilling information and on topographic contour lines of the Tupi Silveira topographic sheet, in a 1:50,000 scale, the reserves parcels of the Candiota Seam have been estimated by overburden thickness, as indicated below: 15% (18 Mt) with overburden thinner than 20m; 40% (48 Mt) with overburden thickness between 20m and 30m; 25% (30 Mt) with overburden thickness between 30m and 40m; 20% (24 Mt) with overburden thickness between 40m and 50m. DNPM approved the reserves shown in Table VIII: Table VIII - Reserves in the Arroio dos Vimes Block Approved by DNPM) DNPM Reserves in 10 3 metric tons Process n. Measured Indicated Inferred Total /84 9,380 84,749 67, /84 13, , /84 23,061 87,277 13, Total

15 31º35' S 32º00' S Informe de Recursos Minerais 53º50' W BAGÉ BR-293 HULHA NEGRA Rio Grande do Sul Porto Alegre BR-153 SEIVAL CANDIOTA index Map ACEGUÁ Arr. Jaguarão Chico BRASIL URUGUAI Rio Jaguarão Arr. Candiota 10 km PEDRAS ALTAS 53º55' W Location Map / /84 Arroio dos Vimes /84 Rio Jaguarão km Town Simplified Map of the Deposit Paved road Unpaved road Coal deposit Railroad Rivers Area avaliable for negotiation m isopach overburden over the Candiota seam CNMC mine Thermoeletric power plant Figure 5 - CANDIOTA DEPOSIT - ARROIO DOS VIMES BLOCK 12

16 Série Oportunidades Minerais - Exame Atualizado de Projeto, 22 Comparing Table VIII with the previous one, it can be seen that the measured reserves for the area n /84 have been reduced by exactly 10,000,000 tons and the inferred reserves have been cancelled, possibly due to transcription errors. The coal quality of the Arroio dos Vimes Block is similar to that found in other blocks of the same deposit. 3.4 Estância da Glória Area Situation As shown in Figure 6, this area lies at the southeastern border of the Candiota deposit, in the municipalities of Erval and Pinheiro Machado, but the nearest urban center is the recently emancipated town of Candiota, 18 km to the north. This town is accessed by paved roads and by railroads from Bagé and Pelotas; local access is by unpaved municipal roads. The area corresponds to DNPM Process n /74, whose Exploration Report the Ministry of Mines and Energy has approved Status of Knowledge The Exploration Report, written in 1982 for this and other five adjacent areas, includes information obtained from only two drill holes carried out at the time in addition to four other, carried out in adjacent Prospect Permit areas. Later on, another eight drill holes were made, all positive for coal, whose data have been consolidated in the Eastern Border of the Paraná Basin Project. It should be pointed out that there are no precise information concerning the W and SW limits of the section exploitable by open pit methods. Geological mapping in the scale 1:50,000 has complemented the geological information Deposit Features In the Estância da Glória Area, coal has been found from seam CBS to CI 4, in an average usual vertical interval of 18m. In the Project Report, reserves have been calculated for the seams CBS + CBI and CI 2. Data of the most recent drillings may add several million tons from CI 3 and CI 4 seams. The great Açotéia Fault, striking N30ºE, crosses the SE limit of the studied area and limits the Gondwana Basin to SE, closing the deposit in this direction. The ten drill holes cover the central part of the area, with an average spacing of 1 km. In a preliminary analysis, based on drilling results in this area and in other drill holes nearby and in the geological mapping, a 50-m isopach line has been drawn over the CBS seam. The sectors under low overburden cover, corresponding to a little more than 50% of the calculated reserves, may be considered exploitable for open pit mining. Of course, it would be necessary to complete the 1 km x 1 km drilling grid to define the overburden volumes to be removed and evaluate precisely the quantity and quality of the reserves of each coal seam. In the Sanga do Cemitério thalweg, next to the western border of the Estância da Glória Area, an outcrop line and a small erosion window of the Candiota Seam were found Reserves in situ A summary of the reserves of each seam and category presented in the Exploration Report and approved by the Ministry of Mines and Energy is shown in Table IX. Table IX - Reserves in the Estância da Glória Area Coal Seam Reserves in 10 3 metric tons Measured Indicated Inferred Total CBS + CBI CI2 10,771 2,182 77,207 14, ,279 19, ,257 36,206 Total 12,953 91, , ,463 13

17 32º00' S Informe de Recursos Minerais 53º50' W BAGÉ BR-293 HULHA NEGRA SEIVAL Rio Grande do Sul Porto Alegre BR-153 CANDIOTA Arr. Jaguarão Chico Rio Jaguarão PEDRAS ALTAS ACEGUÁ Arr. Candiota BRASIL 10 km Index Map URUGUAI Location Map 53º40' W Arr. Candiota Arr. Taquara /74 Sang do a Cemitério º45' S km Simplified Map of the Deposit Town Paved road Unpaved road Coal deposit Railroad Rivers Area avaliable for negotiation m isopach overburden over the Candiota seam CNMC mine Thermoeletric power plant Figure 6 - CANDIOTA DEPOSIT - ESTÂNCIA DA GLÓRIA AREA 14

18 Série Oportunidades Minerais - Exame Atualizado de Projeto, 22 In the Final Exploration Report, based on the two drill holes in the Prospection Permit area and in four drillings nearby, it has been calculated that the area with less than 50m-thick overburden has a size of about 600 ha, with 33% of the total reserves ( Mt in the Candiota seams and Mt in the CI 2 ). After the eight drill holes carried out subsequently, it was verified that the size of the sector with thin overburden had increased to about 1,050 ha. A new calculation of the reserves would certainly increase the share exploitable by open pit methods to a little more than 50% of the total, also adding considerable reserves in the seams CI 3 and CI Quality Similarly to the remainder of the Candiota deposit, in the Estância da Glória Area, the coal fits in the category of Non- Coking High-Volatile C Bituminous Coal of the ASTM classification. Theoretical yields vary from seam to seam and from sector to sector. The review of the assays carried out on the coat of the ten drill holes suggest a quality similar or a little better than that found in the Arroio da Pitangueira Block. In summary, one can expect the average values below: The ROM ash content may be close to 48% for the Candiota seam, as well as for CI 3 and CI 4 and theoretical yields of C 35 may be close to 40%. The CI 2 seam may have a little inferior quality, with a ROM ash content close to 54%. Sulfur contents of the total seams are below 2% and those of the C 35 fraction are below 1% Utilization The coal of Estância da Glória Area may have the same use of that of the remaining blocks, with variable yields, depending on the selected seams and sectors Division Reserves are more than sufficient to carry out one large open pit or several medium ones. However, as they are included in one Prospection Permit, the legal rules inhibit division. 15

19 4 - Capané Deposit 4.1 Arroio Capané Block Situation As shown in Figure 7, in the southern border of the Capané deposit there is an area with 4,398 ha which contains a coal deposit with low overburden. It is located in the Municipality of Cachoeira do Sul, about 30 km SW of the town of Cachoeira do Sul. It includes four Prospection Permits, DNPM Processes n /80, /80, /80 and /80. The Exploration Report was approved by the Ministry of Mines and Energy Status of Knowledge 59 diamond holes have been drilled, with an average spacing of 0.7 km, and six ditches were dug. Outcrop lines were defined and numerous technological tests were made. After the Exploration Report, a Pre-Feasibility Study was composed, with detailed quantitative and qualitative study of the Capanezinho Seam, overburden variability, selection of exploitation methods, washing and environmental control, as well as estimates of their respective costs Deposit Features There are seven coal seams, three of which of economic importance: The Capanezinho seam, with greater continuity, long and irregular outcrops lines, exploitable by open pit methods in 10 discontinued sectors. The Triângulo seam, about 10m below the Capanezinho seam, with small discontinuous sectors. The Jeribá seam, about 15 m below the Triângulo seam, is thick and continuous in the north border of the selected areas, not exploitable by open pit methods. Its total reserves presented in the Final Exploration Report, are Mt. The structure is uniform, with an average down slope of 6% from SE to NW. There is a large fault, with a vertical displacement of 150 m Reserves in situ The DNPM only approved the reserves presented in the Final Exploration Report for the Capanezinho and Triângulo seams, in a total of Mt for the four areas, listed in Table X. Table X - Reserves in the Arroio Capané Block Approved by the DNPM DNPM Process n / / / /80 Total Coal Seam Reserves in 10 3 metric tons Measured Indicated Inferred Total Capanezinho 3,144 0,831 0,000 3,975 Triângulo 0,381 0,085 0,000 0,466 Sum 3,525 0,916 0,000 4,441 Capanezinho 1,105 0,405 0,000 1,510 Triângulo 0,340 0,102 0,000 0,442 Sum 1,445 0,507 0,000 1,952 Capanezinho Triângulo Sum Capanezinho Triângulo Sum Capanezinho Triângulo Sum 12,751 5,416 18,167 3,493 1,282 4,775 20,493 7,419 27,912 6,273 2,887 9,160 1,841 1,596 3,437 9,350 4,670 14,020 0,118 0,071 0,189 0,000 0,071 0,071 0,118 0,142 0,260 19,142 8,374 27,516 5,334 2,949 8,283 29,961 12,231 42,192 16

20 Série Oportunidades Minerais - Exame Atualizado de Projeto, 22 53º00'W 52º30' W Cachoeira do Sul Rio Jacuí Rio Grande do Sul Porto Alegre Rio Irapuã CAPANÉ Arr. Piquiri Arr. Iruí IRUÍ Rio Jacuí Arr. Capané BR Pantano Grande do Sul 30º15' S 10 km Index Map 53º00' W Location Map BR /80 Arr. zin Capane ho /80 Arr. Capané /80 30º20' S /80 Capané Mine km Simplified Map of the Deposit Town Paved road Unpaved road Rivers Coal deposit Sector of open pit mine reserves included in CPRM's Permits Area avaliable for negotiation Coal mine Figure 7 - CAPANÉ DEPOSIT - ARROIO CAPANÉ BLOCK 17