Table of Contents

United States

Securities and Exchange Commission

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

of the

Securities Exchange Act of 1934

For the month of

October 2017

Vale S.A.

Avenida das Américas, No. 700 – Bloco 8, Sala 218
22640-100 Rio de Janeiro, RJ, Brazil

(Address of principal executive office)

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

(Check One) Form 20-F x Form 40-F o

(Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1))

(Check One) Yes o No x

(Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7))

(Check One) Yes o No x

(Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.)

(Check One) Yes o No x

(If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b). 82- .)

Table of Contents

Table of Contents:

Press Release | 1
Signature Page | 19

2

Ricardo Teles/Vale Vale’sProductionin 3Q17

www.vale.com rio@vale.com App Vale Investors & Media iOS: https://itunes.apple.com/us/app/vale-investor-media-english/id1087126847?mt=8 Android: https://play.google.com/store/apps/details?id=com.theirapp.valeeg Tel.: (55 21) 3485-3900 Investor Relations André Figueiredo André Werner Carla Albano Miller Fernando Mascarenhas Andrea Gutman Bruno Siqueira Claudia Rodrigues Denise Caruncho Mariano Szachtman Renata Capanema Department This press release may include statements that present Vale’s expectations about future events or results. All statements, when based upon expectations about the future, involve various risks and uncertainties. Vale cannot guarantee that such statements will prove correct. These risks and uncertainties include factor s related to the following: (a) the countries where we operate, especially Brazil and Canada; (b) the global economy; (c) the capital markets; (d) the mining and metals prices and their dependence on global industrial production, which is cyclical by natur e; and (e) global competition in the markets in which Vale operates. To obtain further information on factors that may lead to results different from those forecast by Vale, please con sult the reports Vale files with the U.S. Securities and Exchange Commis sion (SEC), the Brazilian Comissão de Valores Mobiliários (CVM), and the French Autorité des Marchés Financiers (AMF), and in particular the factors discussed under “Forward -Looking Statements” and “Risk Factors” in Va le’s annual report on Form 20-F. BM&F BOVESPA: VALE3, VALE5 NYSE: VALE, VALE.P EURONEXT PARIS: VALE3, VALE5 LATIBEX: XVALO, XVALP

Production highlights Rio de Janeiro, October 19, 2017 – Vale S.A. (Vale) iron ore production1 achieved a quarterly record of 95.1 Mt in 3Q17, 3.3 Mt higher than in 2Q17, mainly due to the better operational performance in the Northern System and the S11D ramp-up. The Northern System, which comprises Carajás, Serra Leste and S11D, achieved a quarterly record of 45.0 Mt in 3Q17, 8.5% and 16.4% higher than in 2Q17 and 3Q16, respectively, mainly due to the ramp-up of S11D, which is advancing according to plan, plus better operational performance in the mine and plant at Carajás and the weather-related seasonality. Sales volumes for 3Q17 were lower than the production volumes, implying a slight inventory build-up as a result of operational needs and market strategies. However, the sales/production volume ratio were higher than in 2Q17. As announced in the 2Q17 Production Report, production of ore with high silica content from the Southern and Southeastern Systems was reduced by an annualized rate of 19 Mt. Production will therefore be within the lower end of the 360-380 Mt guidance range for 2017, in line with the ongoing strategy to maximize margins. Vale reaffirms its long-term base case target of 400 Mt of total production per year. The average Fe content was 64.1% in 3Q17, slightly higher than the 63.8% in 2Q17. The increase results from the curtailment of high silica products and Vale’s strategy to improve iron ore price realization. Nickel production reached 72,700 t in 3Q17, 10.2% higher than in 2Q17, mainly due to Sudbury furnace #2 returning to production in July, strong production performance in Thompson and the steady performance at Onça Puma. In mid-September, Sudbury transitioned to the new single furnace flowsheet and commenced operating as a single furnace operation. Production at the Long Harbour processing plant reached a record of 8,300 t in 3Q17, 118.4% higher than the 3,800 t recorded in 3Q16 due to the production ramp-up. In July, the refinery successfully reached 75% of monthly nameplate capacity. 1 Including iron ore acquired from third parties . 3

Production of finished products from VNC reached 10,100 t in 3Q17, 12.2% higher than in 2Q17 and 36.5% higher than in 3Q16. Copper production2 reached 116,900 t in 3Q17, 16.0% higher than in 2Q17 and 7.0% higher than in 3Q16, mainly due to the record quarterly production in Salobo and higher production in Sudbury, as it returned to regular operation after a scheduled maintenance shutdown in 2Q17. Coal production in Mozambique reached a quarterly record of 3.2 Mt in 3Q17, 5.8% and 38.3% higher than in 2Q17 and 3Q16, respectively, as a result of the better performance of the two Coal Handling and Preparation Plants (CHPP1 and CHPP2). CHPP2 reached a new monthly production record of 566 kt in July, as a result of its continuing ramp-up. The share of metallurgical coal was 58% of overall production, due to a combination of the geological characteristics of the feed plus the continued optimization of the CHPPs. We expect the share of metallurgical coal to return to 60%-65% of overall production. Logistics operations in Mozambique reached all-time records, with railed volume3 reaching 3.5 Mt in 3Q17, 15% higher than in 2Q17. Production summary Pellets 12,766 12,215 12,072 37,404 33,598 4.5% 5.8% 11.3% Coal (Mozambique) 3,213 3,037 1,756 8,684 3,907 5.8% 83.0% 122.3% Copper2 118.8 102.7 111.4 330.4 330.6 15.7% 6.6% -0.1% 19.1% 11.0% 0.3% Gold (000' oz troy) 131 110 118 346 345 ¹ Including third party purchases. ² Including Lu bam b e’s attributable produ ction. 2 Excluding Lubambe’s attributable production. 3 Includes Sena-Beira and Nacala logistics corridors. 4 Cobalt1,4891,4121,4884,1604,1995.4%0.0%-0.9% Nickel72.766.076.0210.1228.010.2%-4.3%-7.9% Manganese Ore5685076421,6201,79112.1%-11.5%-9.6% % change 000’ metric tons3Q172Q173Q169M179M163Q17/2Q17 3Q17/3Q16 9M17/9M16 Iron ore195,11191,84992,093275,159 256,4613.6%3.3%6.5%

Iron Ore Southeastern System 26,898 27,450 27,240 82,514 74,950 -2.0% -1.3% 10.1% Minas Centrais 9,197 9,642 10,431 29,176 30,425 -4.6% -11.8% -4.1% Southern System 22,580 22,318 25,648 66,402 72,255 1.2% -12.0% -8.1% Vargem Grande 5,448 6,325 7,750 18,238 22,435 -13.9% -29.7% -18.7% Midwestern System 632 587 554 1,774 1,726 7.6% 13.9% 2.8% ¹ Including third party purchases. Production summary Vale’s iron ore production achieved a quarterly record of 95.1 Mt in 3Q17, 3.3 Mt higher than in 2Q17 mainly due to better operational performance in the Northern System and the S11D ramp-up. Production was 3.0 Mt higher than in 3Q16 due to the S11D start-up in 4Q16 in the Northern System. As announced in the 2Q17 Production Report, production of ore with high silica content from the Southern and Southeastern Systems was reduced by an annualized rate of 19 Mt. Production will therefore be within the lower end of the 360-380 Mt guidance range for 2017, in line with the ongoing strategy to maximize margins. Vale reaffirms its long-term base case target of 400 Mt of total production per year. Vale’s Global Recovery rate (GR)4 increased from 47% in 3Q15 to 49% in 3Q16 and to 50% in 3Q17, with an estimate of 51% for 2017. 4 Measured by output of final production divided by the total ton nages extracted (ROM and waste). 5 IRON ORE195,111 91,84992,093275,159256,4613.6%3.3%6.5% Minas Itabirito9,8729,41810,91928,22430,2054.8%-9.6%-6.6% Paraopeba7,2616,5756,97819,93919,61510.4%4.0%1.7% Mariana8,0948,7338,02825,83419,741-7.3%0.8%30.9% Itabira9,6079,0768,78127,50524,7845.9%9.4%11.0% % change 000’ metric tons3Q172Q173Q169M179M16 3Q17/2Q173Q17/3Q169M17/9M16 Northern System45,001 41,49438,651122,468107,5298.5%16.4%13.9%

Iron ore and pellets shipments from Brazil and Argentina totaled 86.0 Mt in 3Q17, 9.0 Mt and 1.7 Mt higher than in 3Q15 and 3Q16, respectively, mainly due to higher production in the Northern System. Blended volumes in Asia totaled 19.3 Mt in 3Q17, 14.3 Mt and 10.2 Mt higher than in 3Q15 and 3Q16, respectively, as a result of the ongoing strategy to bring more flexibility to the integrated supply chain, consequently increasing Vale’s offshore blending capacity, to respond to market conditions. The share of offshore inventories over total inventories increased from 15% in 2015 and 2016 to 30% in 3Q17, reflecting the ongoing strategy to shift inventories downstream along the supply chain and closer to the final costumer. The expectation is to maintain 30% of total inventories offshore by the end of 2017. Sales volumes for 3Q17 were lower than production volumes, implying a slight inventory build-up as a result of operational needs and market strategies. However, the sales/production volume ratio were higher than in 2Q17. The average Fe content was 64.1% in 3Q17, slightly higher than the 63.8% in 2Q17. The increase results from the curtailment of high silica products and Vale’s strategy to improve iron ore price realization. Northern System The Northern System, which comprises Carajás, Serra Leste and S11D, achieved a quarterly record of 45.0 Mt in 3Q17, 8.5% and 16.4% higher than in 2Q17 and 3Q16, respectively, mainly due to the ramp-up of S11D, which is advancing according to plan, with better operational performance in the mine and plant at Carajás and the positive weather-related seasonality. 6

Southeastern System The Southeastern System, which encompasses the Itabira, Minas Centrais and Mariana mining hubs, produced 26.9 Mt in 3Q17, 0.6 Mt and 0.3 Mt lower than in 2Q17 and 3Q16, respectively, mainly due to the curtailment of production in some mines prioritizing higher margins. Southern System The Southern System, which encompasses the Paraopeba, Vargem Grande and Minas Itabirito mining hubs, produced 22.6 Mt in 3Q17, in line with 2Q17 but 12.0% lower than in 3Q16, mainly due to the curtailment of production in some mines prioritizing higher margins. Midwestern System The Midwestern System, which encompasses the Urucum and the Corumbá mines, produced 0.6 Mt in 3Q17, in line with 2Q17 and 3Q16, as a result of Vale’s continuing strategy to optimize margins. 7

Pellets Southeastern System 7,678 7,748 7,000 22,940 20,878 -0.9% 9.7% 9.9% Hispanobras (Tubarão 4) 1,192 1,126 1,084 3,446 3,299 5.9% 10.0% 4.5% Kobrasco (Tubarão 7) 1,134 1,201 694 3,506 2,752 -5.6% 63.4% 27.4% Southern System 2,600 2,518 2,749 7,664 6,622 3.3% -5.4% 15.7% Vargem Grande 1,602 1,599 1,792 4,827 4,804 0.2% -10.6% 0.5% Production overview Vale’s pellet production achieved a quarterly record of 12.8 Mt in 3Q17, 4.5% and 5.8% higher than in 2Q17 and 3Q16, respectively, mainly due to higher productivity and a reduction in the number of scheduled maintenance stoppages. Projects for restarting the São Luis and the Tubarão II pellet plants are on schedule, with their start-up envisioned for the first half of 2018. Southeastern system Production at the Tubarão pellet plants – Tubarão 3, 4, 5, 6, 7 and 8 – reached 7.7 Mt in 3Q17, remaining in line with 2Q17 and 9.7% higher than in 3Q16, mainly due to the scheduled maintenance stoppage of Tubarão 7 in July and August of 2016. Southern system The Fábrica pellet plant achieved a production level of 1.0 Mt in 3Q17, 8.6% higher than in 2Q17 due to higher availability of feed, and 4.4% higher than in 3Q16 due to higher productivity in the plant. 8 Oman2,488 1,9482,3236,8006,09927.7%7.1%11.5% PELLETS12,766 12,215 12,07237,40433,5984.5%5.8%11.3% Fábrica9989199562,8371,8178.6%4.4%56.1% Tubarão 81,793 1,8731,7895,3495,302-4.2%0.3%0.9% Nibrasco (Tubarão 5 and 6) 2,464 2,3782,2837,2446,1563.6%7.9%17.7% Itabrasco (Tubarão 3)1,095 1,1691,1503,3953,369-6.4%-4.8%0.8% % change 000’ metric tons3Q17 2Q173Q169M179M16 3Q17/2Q17 3Q17/3Q16 9M17/9M16

The Vargem Grande pellet plant reached 1.6 Mt of production in 3Q17, in line with 2Q17, but 10.6% lower than in 3Q16, as a result of lower availability of feed due to a maintenance stoppage in the iron ore concentration plant. Oman operations The Oman pellet plant achieved a quarterly record of 2.5 Mt in 3Q17, 27.7% higher than in 2Q17 due to a 37-day scheduled maintenance stoppage in one of the plant’s lines in April and May 2017, and 7.1% higher than in 3Q16 due to higher productivity in the plants. 9

Manganese ore and ferroalloys Azul 382318 475 1,067 1,306 19.8% -19.7% -18.3% Morro da Mina 27 17 - 58 - 57.9% n.m. n.m. Production overview Manganese ore production totaled 568,000 t in 3Q17, 12.1% higher than in 2Q17 and 11.5% lower than in 3Q16. Ferroalloy production reached 35,000 t in 3Q17, in line with 3Q16 and 11.6% lower than in 2Q17. Manganese ore production Production at the Azul manganese mine totaled 382,000 t in 3Q17, 19.8% higher than in 2Q17 due to a scheduled maintenance stoppage in the plant in June, and 19.7% lower than in 3Q16 mainly due to lower availability of high grade run of mine. Production at the Urucum mine totaled 160,000 t in 3Q17, 6.8% and 4.2% lower than in 2Q17 and 3Q16, respectively, mainly due to a 10 day scheduled maintenance stoppage at the beneficiation plant. Production at the Morro da Mina mine totaled 27,000 t in 3Q17, 57.9% higher than in 2Q17 mainly due to an increase in production at the Barbacena ferroalloys plant, in response to higher demand from customers. There was no production in 3Q16. Ferroalloy production Ferroalloy production in 3Q17 totaled 35,000 t, in line with 3Q16 but 11.6% lower than in 2Q17 due to stoppage in Furnace 8 in Simões Filho plant. Production was made up of 17,000 t of ferrosilicon manganese (FeSiMn), 12,000 t of high-carbon manganese (FeMnHC) and 6,000 t of medium-carbon manganese (FeMnMC). 10 FERROALLOYS (Brazil)35403611189-11.6%-0.9%24.9% Urucum160172167495485-6.8%-4.2%2.0% % change 000’ metric tons3Q17 2Q173Q169M179M163Q17/2Q17 3Q17/3Q169M17/9M16 MANGANESE ORE5685076421,6201,79112.1%-11.5%-9.6%

Lucas Pupo / Agência Vale Nickel Finished production by source Canada 35.6 27.3 37.6 98.8 112.5 30.4% -5.3% -12.2% Thompson 6.7 4.6 4.9 16.0 19.3 45.7% 36.7% -17.1% Indonesia 18.2 19.7 20.8 54.1 59.3 -7.6% -12.5% -8.8% Brazil 7.1 5.5 6.6 18.7 18.5 29.1% 7.6% 1.1% 1 Production at V NC reach ed 9,4 00 t in 3Q17, while production of finished nickel from V NC totaled 1 0,10 0 t in 3Q1 7; the differences stem m ing from the req uired tim e for processing into finished nickel. 2 External feed purchased from third parties and processed into finishe d nickel in our Can adian op erations. Production overview Production of nickel reached 72,700 t in 3Q17, 10.2% higher than in 2Q17, mainly due to Sudbury furnace #2 returning to production in July, strong production performance in Thompson, and the steady performance at Onça Puma. Canadian operations Production from the Sudbury mines reached 18,500 t in 3Q17, 134.2% higher than in 2Q17 and 16.3% lower than in 3Q16. The increase compared to 2Q17 was due to the return of furnace #2 to production in 3Q17 while the three-week scheduled maintenance in June for all surface operations adversely impacted production in 2Q17. Furnace #2 was rebuilt with expanded capacity. In mid-September, Sudbury transitioned to the new single furnace flowsheet and commenced operating as a single furnace operation. Production decreased in relation to 3Q16 mainly due to the full operation of two furnaces in 3Q16 while in 3Q17 Sudbury transitioned to a single furnace operation. Sudbury’s transition to a single furnace has gone very well with the newly designed furnace already exceeding its nameplate capacity. 11 Feed from third parties2 1.74.53.68.912.3-62.2%-52.8%-27.6% TOTAL NICKEL72.766.076.0210.1228.010.2%-4.3%-7.9% New Caledonia110.19.07.429.325.412.2%36.5%15.4% Voisey's Bay10.414.810.638.632.7-29.7%-1.9%18.0% Sudbury18.57.922.144.260.5134.2%-16.3%-26.9% % change 000’ metric tons3Q17 2Q17 3Q169M179M163Q17/2Q173Q17/3Q169M17/9M16

Production from the Thompson mines reached 6,700 t in 3Q17, 45.7% higher than in 2Q17 and 36.7% higher than in 3Q16. The increase when compared to 2Q17 was due to operational issues at the Thompson refinery in 2Q17. Production increased in relation to 3Q16 due to a shortened scheduled maintenance period at its surface plants in 3Q17. As previously announced, Birchtree mine in Thompson was placed under care and maintenance at the end of September. Production from Voisey’s Bay source ore reached 10,400 t in 3Q17, 29.7% lower than in 2Q17 and 1.9% lower than in 3Q16, mainly due to lower shipment of Voisey’s Bay concentrate to Sudbury for further processing, which was partially offset by higher volumes delivered to the Long Harbour processing plant in preparation for its continued ramp-up, coincident with this the volume of Voisey’s Bay concentrate sent to Ontario and Manitoba for further processing is declining. . Production at the Long Harbour processing plant reached a record of 8,300 t in 3Q17, 15.3% higher than in 2Q17 and 118.4% higher than the 3,800 t recorded in 3Q16 due to the production ramp-up. In July, the refinery successfully reached 75% of monthly nameplate capacity. Indonesian operation (PTVI) Production of finished nickel from PTVI reached 18,200 t in 3Q17, 7.6% lower than in 2Q17 and 12.5% lower than in 3Q16, mainly due to timing issues as PTVI source nickel was shipped to Clydach, with a longer transit period, in order to optimize production from our carbonyl refineries. It is anticipated that Indonesian source nickel will continue to be shipped to Clydach in response to the single furnace operation in Sudbury. PTVI nickel in matte production reached 20,200 t in 3Q17, in line with 2Q17 and 6.9% lower than in 3Q16. New Caledonia operation (VNC) Production of finished products from VNC reached 10,100 t in 3Q17, 12.2% higher than in 2Q17 and 36.5% higher than in 3Q16. Production of NiO and NHC at VNC amounted to 9,400 t in 3Q17. Site production was 8.0% higher than 2Q17 and 4.4% higher than in 3Q16. The increase when compared to 2Q17 was also due to the impact of unscheduled maintenance and two tropical cyclones during that quarter. 12

Brazilian operation (Onça Puma) Production at Onça Puma operation reached a record 7,100 t in 3Q17, 29.1% higher than in 2Q17 and 7.6% higher than in 3Q16, mainly due to strong plant performance with high productivity. Additionally, maintenance shutdown. Onça Puma production in 2Q17 was impacted by a scheduled 13

Marcelo Coelho / Agência Vale Copper Finished production by source Sossego 25.6 26.2 24.1 76.7 70.1 -2.3% 6.2% 9.4% Sudbury 30.1 17.0 29.7 73.5 89.4 77.1% 1.3% -17.8% Voisey's Bay 6.6 8.7 5.6 24.3 20.7 -24.1% 17.9% 17.4% Lubambe1 1.9 1.9 2.1 5.3 5.9 0.0% -9.5% -10.2% 1 Attributable production Production overview Copper production5 reached 116,900 t in 3Q17, 16.0% higher than in 2Q17 and 7.0% higher than in 3Q16, mainly due to the record quarterly production in Salobo and higher production in Sudbury, as it returned to regular operation after a scheduled maintenance shutdown in 2Q17. Brazilian operations Production of copper in concentrate at Sossego totaled 25,600 t in 3Q17, in line with 2Q17 and 6.2% higher than 3Q16. The increase when compared to 3Q16 was due to higher feed grades and higher mill productivity. Production of copper in concentrate at Salobo reached a quarterly record at 51,800 t in 3Q17, 12.6% higher than in 2Q17 and 16.9% higher than in 3Q16. Production was positively impacted by higher feed grades and stronger plant performance in 3Q17. 5 Excluding Lubambe’s attributable production. 14 TOTAL COPPER118.8 102.7111.4330.4330.615.7%6.6%-0.1% Feed from third parties2.52.54.99.016.30.0%-49.0%-44.8% TOTAL EX-LUBAMBE116.9 100.8109.3325.1324.816.0%7.0%0.1% Thompson0.30.40.81.02.2-25.0%-62.5%-54.5% Salobo51.8 46.044.3140.4126.112.6%16.9%11.3% CANADA39.5 28.640.9107.8128.738.1%-3.7%-16.2% % change 000’ metric tons3Q17 2Q173Q169M179M163Q17/2Q17 3Q17/3Q169M17/9M16 BRAZIL77.4 72.268.4217.7196.27.2%13.2%11.0%

Canadian operations Production of copper from the Sudbury mines reached 30,100 t in 3Q17, 77.1% higher than in 2Q17 and in line with 3Q16. The increase when compared to 2Q17 was due to lower copper production at Sudbury in 2Q17 as a result of the scheduled three-week maintenance period at the surface plants and both planned and unplanned maintenance in the mines. With the transition to the new single furnace flowsheet in 3Q17, Sudbury achieved a record quarterly copper concentrate production of 22,400 t. Production of copper from Voisey’s Bay reached 6,600 t in 3Q17, 24.1% lower than in 2Q17 and 17.9% higher than in 3Q16. The decrease when compared to 2Q17 was due to a scheduled maintenance shutdown conducted at the Voisey’s Bay minesite and additional Voisey’s Bay concentrate being moved to Long Harbour to support Long Harbour’s continued ramp-up. The increase in relation to 3Q16 was due to the ramp-up of copper production at the Long Harbour processing plant and the strong operational performance at the Voisey’s Bay mine and mill. African operation (Lubambe) Lubambe delivered 4,800 t of copper in concentrate on a 100% basis (attributable production of 1,900 t). 15

Olli Geibel / AFP / Agência Vale Nickel and copper Finished production by source by-products Sudbury 279 124 198 618 596 124.0% 41.0% 3.7% Voisey’s Bay 382 436 227 1,030 566 -12.4% 68.0% 82.0% Others 12 66 30 95 119 -82.0% -59.9% -20.2% Sudbury 36 36 44 107 140 -0.8% -18.7% -23.6% Sudbury 57 64 79 182 274 -11.1% -28.2% -33.6% Cobalt Cobalt production totaled 1,489 t in 3Q17, 5.4% higher than in 2Q17 and in line with 3Q16. Production increased mainly due to Sudbury, which registered record cobalt production in the months of August and September. Cobalt production from Sudbury was 279 t in 3Q17, 155 t higher than the 124 t in 2Q17 and 81 t higher than the 198 t in 3Q16. Production from Voisey’s Bay was 382 t in 3Q17, 54 t lower than the 436 t in 2Q17 and 155 t higher than the 227 t in 3Q16. Platinum and palladium Platinum production was 36,000 oz, in line with 2Q17, and palladium production was 57,000 oz, 11.1% lower than in 2Q17. Gold as a by-product of nickel and copper concentrates The contained volume of gold as a by-product in the nickel and copper concentrates reached 131,000 oz in 3Q17, 19.1% higher than in 2Q17 and 11.0% higher than in 3Q16. 16 GOLD (000' oz troy)13111011834634519.1%11.0%0.3% PALLADIUM (000' oz troy)576479182274-11.1%-28.2%-33.6% PLATINUM (000' oz troy)363644107140-0.8%-18.7%-23.6% VNC7106758432,0632,3745.1%-15.7%-13.1% Thompson106111191355544-3.8%-44.3%-34.7% % change 3Q17 2Q173Q169M179M16 3Q17/2Q17 3Q17/3Q169M17/9M16 COBALT (metric tons)1,489 1,4121,4884,1604,1995.4%0.0%-0.9%

Coal Metallurgical coal 1,853 2,049 1,063 5,534 2,474 -9.6% 74.4% 123.7% Metallurgical coal - - 568 - 1,585 - - - Production overview Coal production reached 3.2 Mt in 3Q17, a record for a quarter, with production coming exclusively from the Moatize mine in Mozambique. Total coal production was 5.8% and 38.3% higher than in 2Q17 and 3Q16, respectively. The production record resulted from the better performance of the two Coal Handling and Preparation Plants (CHPP1 and CHPP2), which increased production by 5% and 6%, respectively, compared to 2Q17. More specifically, CHPP2 reached a new monthly production record of 566 kt in July, as a result of its continuing ramp-up. Production of metallurgical coal from Mozambique was 1.9 Mt in 3Q17, 9.6% lower than 2Q17 and 74.4% higher than in 3Q16. Production of thermal coal was 1.4 Mt in 3Q17, 37.7% and 96.2% higher than in 2Q17 and 3Q16, respectively. The decrease in metallurgical coal production in 3Q17 compared to 2Q17, was more than offset by the increase in thermal coal production, which contributed to lower the share of metallurgical coal to 58% of overall production. The determinant of this lower share was a combination of the geological characteristics of the feed plus the continued optimization of the CHPPs. We expect the share of metallurgical coal to return to between 60%-65% of overall production. We are revising our coal production guidance to around 12 Mt in 2017, as a result of reduced stripping capacity and lower achieved equipment productivity. 17 TOTAL COAL3,213 3,0372,3248,6845,4925.8%38.3%58.1% Metallurgical coal1,853 2,0491,6315,5344,059-9.6%13.6%36.4% Thermal coal1,3609886933,1501,43337.7%96.2%119.8% Thermal coal1,3609886933,1501,43337.7%96.2%119.8% AUSTRALIA--568-1,585---% change 000’ metric tons3Q17 2Q173Q169M179M16 3Q17/2Q17 3Q17/3Q16 9M17/9M16 MOZAMBIQUE3,213 3,0371,7568,6843,9075.8%83.0%122.3%

In 3Q17, our logistics operations in Mozambique reached all-time records, with the continuous ramp-up of Nacala Corridor. Total railed volume6 was 3.5 Mt in 3Q17, 15% higher than the 3.1 Mt railed in 2Q17 and total shipped volume6 was 3.4 Mt in 3Q17, 9% higher than the 3.1 Mt shipped in 2Q17. 6 Includes Sena-Beira and Nacala logistics corridors. 18

Table of Contents

Signatures

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

| Vale S.A. (Registrant)
| By: | /s/ André Figueiredo
|  | Director of Investor Relations
Date: October 19, 2017 |  |

19