Fundão Tailings Dam Review Panel

Report on the Immediate Causes of the Failure of the Fundão Dam Appendix B – GIS/Imagery Outputs

August 25, 2016

ATTACHMENT B6 Slimes Depositional History and Spatial Reconstruction

Summary of Slimes Elevations

Slimes Image Timeline

Fundão Tailings Dam Review Panel

Report on the Immediate Causes of the Failure of the Fundão Dam Appendix B – GIS/Imagery Outputs

August 25, 2016

Summary of Slimes Elevations

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Summary of Slimes Elevations

Dike 2 (Max.) Dike 1 (Min.)Stitched Stripped

GroundG021600-O-130458_R-00

(not shown in image timeline)G021600-O-

130415_R-01SA-1849-R02 041-A-MN-GR-09-006 SA-1788

Monthly Samarco survey(survey date shown)

2009-04-18 PhotoSat aerial image 841.0 no slimes in Dike 1 x2009-08-18 PhotoSat aerial image 841.0 no slimes in Dike 1 x2009-11-15 PhotoSat aerial image 847.0 no slimes in Dike 1 x2010-01-17 PhotoSat aerial image 847.0 no slimes in Dike 1 x2010-02-22 PhotoSat aerial image 847.0 no slimes in Dike 1 x2010-04-27 PhotoSat aerial image 847.0 813.0 x x x2010-06-19 PhotoSat aerial image 847.0 819.0 x x x2010-08-07 PhotoSat aerial image 847.0 824.0 x x x2010-10-29 PhotoSat aerial image 847.0 no slimes in Dike 1 x2010-12-22 PhotoSat aerial image 847.0 no slimes in Dike 1 x2011-02-11 PhotoSat aerial image 848.0 824.0 x x x x2011-04-09 PhotoSat aerial image 848.0 830.0 x x x x2011-07-01 Samarco topography 852.0 834.0 x2011-07-27 Samarco monthly report 852.0 835.9 x2011-08-24 Samarco monthly report 852.0 835.9 x2011-08-17 PhotoSat aerial image 852.0 835.0 x2011-09-15 Samarco monthly report 852.0 836.8 x2011-09-21 PhotoSat aerial image 853.0 837.0 x2011-10-02 PhotoSat aerial image 853.0 837.0 x2011-10-11 Samarco monthly report 853.0 838.6 x2011-11-08 Samarco monthly report 852.0 839.8 x2011-12-16 Samarco monthly report 852.0 839.8 x2012-01-10 Samarco monthly report 852.0 840.6 2012-01-212012-01-21 Samarco topography 851.0 841.0 2012-01-212012-02-09 Samarco monthly report 852.0 841.4 2012-01-212012-03-16 Samarco monthly report 852.0 842.9 2012-01-212012-03-03 PhotoSat aerial image 852.0 842.0 2012-01-212012-04-01 Vale survey 852.5 842.5 2012-04-01 (Vale)2012-04-19 Samarco monthly report 852.5 844.8 2012-04-01 (Vale)2012-05-14 Samarco monthly report 853.0 846.7 2012-04-01 (Vale)2012-06-04 Samarco monthly report 853.0 848.2 2012-04-01 (Vale)2012-07-13 Samarco monthly report 853.0 849.5 2012-04-01 (Vale)2012-08-09 Samarco monthly report no slimes in Dike 12012-09-02 Samarco topography 858.0 no slimes in Dike 1 2012-09-022012-09-11 Samarco monthly report no slimes in Dike 12012-09-26 Samarco topography 858.0 no slimes in Dike 1 2012-09-262012-10-29 Samarco monthly report no slimes in Dike 12012-11-30 Samarco monthly report no slimes in Dike 12012-12-11 Samarco monthly report no slimes in Dike 12013-01-01 Samarco topography 861.0 no slimes in Dike 1 2013-01-012013-01-25 Samarco monthly report no slimes in Dike 12013-02-01 Samarco topography 861.0 no slimes in Dike 1 2013-02-012013-02-28 Samarco monthly report no slimes in Dike 12013-03-02 Samarco topography 863.0 no slimes in Dike 1 2013-03-022013-03-05 Samarco monthly report no slimes in Dike 12013-04-02 Samarco topography 864.3 no slimes in Dike 1 2013-04-022013-04-30 Samarco monthly report no slimes in Dike 12013-05-01 Samarco topography 865.0 no slimes in Dike 1 2013-05-012013-05-08 PhotoSat aerial image2013-05-27 Samarco topography 865.5 no slimes in Dike 1 2013-05-272013-05-28 Samarco monthly report no slimes in Dike 12013-06-27 Samarco monthly report 867.4 863.2 2013-06-30

Basis for DelineationFile Survey

Date

Slimes Elevation (m)

Excluded - date of survey and image show similar conditions to the May 1, 2013 Samarco survey. No slimes in Dike 1.

insufficient info to estimate

insufficient info to estimate

insufficient info to estimateinsufficient info to estimateinsufficient info to estimate

insufficient info to estimate

Topography Source

insufficient info to estimate

insufficient info to estimate

insufficient info to estimate

insufficient info to estimate

August 25, 2016 Page B.B6-1

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Summary of Slimes Elevations

Dike 2 (Max.) Dike 1 (Min.)Stitched Stripped

GroundG021600-O-130458_R-00

(not shown in image timeline)G021600-O-

130415_R-01SA-1849-R02 041-A-MN-GR-09-006 SA-1788

Monthly Samarco survey(survey date shown)

Basis for DelineationFile Survey

Date

Slimes Elevation (m) Topography Source

2013-06-30 Samarco topography 867.4 864.5 2013-06-302013-07-29 Samarco topography 867.5 865.0 2013-07-292013-07-29 Samarco monthly report (July) 865.0 2013-07-292013-08-01 Samarco monthly report 867.0 2013-09-032013-09-03 Samarco topography 868.0 866.5 2013-09-032013-09-24 Samarco monthly report 868.0 2013-10-012013-10-01 Samarco topography 868.0 868.0 2013-10-012013-10-27 Samarco topography 869.2 869.0 2013-10-272013-10-30 Samarco monthly report2013-11-26 Samarco topography 870.0 870.0 2013-11-262013-12-02 Samarco monthly report2013-12-27 Samarco topography 870.3 870.3 2013-12-272014-01-23 Samarco monthly report 870.9 2014-01-292014-01-29 Samarco topography 872.0 872.0 2014-01-292014-03-28 Samarco topography 873.0 873.0 2014-03-282014-05-01 Samarco topography 874.4 874.4 2014-05-012014-06-03 Samarco topography 876.0 876.0 2014-06-032014-06-27 Samarco topography 876.4 876.4 2014-06-272014-08-04 Samarco topography 877.0 877.0 2014-08-042014-08-10 PhotoSat aerial image2014-08-29 Samarco topography 878.5 878.5 2014-08-292014-09-26 Samarco topography 879.7 879.7 2014-09-262014-10-31 Samarco topography 881.0 881.0 2014-10-312014-11-27 Samarco topography 882.0 882.0 2014-11-272014-12-29 Samarco topography 882.5 882.5 2014-12-292015-01-29 Samarco topography 883.5 883.5 2015-01-292015-02-27 Samarco topography 885.0 885.0 2015-02-272015-03-20 Samarco topography 885.0 885.0 2015-03-202015-04-24 Samarco topography 886.4 886.4 2015-04-242015-05-27 Samarco topography 887.5 887.5 2015-05-272015-06-22 Samarco topography 888.7 888.7 2015-06-222015-06-24 PhotoSat aerial image2015-07-10 PhotoSat aerial image2015-07-21 PhotoSat aerial image2015-07-27 Samarco topography 890.0 890.0 2015-07-272015-08-24 Samarco topography 890.6 890.6 2015-08-242015-10-01 Samarco topography 891.5 891.5 2015-10-012015-10-27 Samarco topography 893.0 892.5 2015-10-27

Notes:1. Bolded text or values indicate the same date or values were given in the monthly monitoring report as the previous report.2. Grey cells denote data not included in final slimes data series.

Excluded from dataset - date of survey and image show similar conditions to the pre- and proceding Samarco topographic survey

insufficient info to estimateinsufficient info to estimate

insufficient info to estimate

Excluded from dataset - date of survey and image show similar conditions to the pre- and proceding Samarco topographic survey

insufficient info to estimate

Monthly report does not provide coordinates or elevations for crest or beach - unable to estimate

Monthly report does not provide coordinates or elevations for crest or beach - unable to estimate

August 25, 2016 Page B.B6-2

Fundão Tailings Dam Review Panel

Report on the Immediate Causes of the Failure of the Fundão Dam Appendix B – GIS/Imagery Outputs

August 25, 2016

Slimes Image Timeline

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2009-04-18 2009-08-18 2009-11-15

RapidEye satellite image © 2009 Planet Labs RapidEye satellite image © 2009 Planet Labs ALOS satellite image © 2009 JAXA

August 25, 2016 Page B.B6-1

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2010-01-17 2010-02-22 2010-04-27

RapidEye satellite image © 2010 Planet Labs RapidEye satellite image © 2010 Planet Labs RapidEye satellite image © 2010 Planet Labs

August 25, 2016 Page B.B6-2

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2010-06-19 2010-08-07 2010-10-29

RapidEye satellite image © 2010 Planet Labs RapidEye satellite image © 2010 Planet Labs RapidEye satellite image © 2010 Planet Labs

August 25, 2016 Page B.B6-3

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2010-12-22 2011-02-11 2011-04-09

RapidEye satellite image © 2010 Planet Labs GeoEye1 satellite image © 2011 DigitalGlobe RapidEye satellite image © 2011 Planet Labs

August 25, 2016 Page B.B6-4

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2011-07-01 2011-07-27 (Monthly Report) 2011-08-24 (Monthly Report)

August 25, 2016 Page B.B6-5

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2011-08-17 2011-09-15 (Monthly Report) 2011-09-21

RapidEye satellite image © 2011 Planet Labs WorldView1 satellite image © 2011 DigitalGlobe

August 25, 2016 Page B.B6-6

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2011-10-02 2011-10-11 (Monthly Report) 2011-11-08 (Monthly Report)

GeoEye1 satellite image © 2011 DigitalGlobe

August 25, 2016 Page B.B6-7

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2011-12-16 (Monthly Report) 2012-01-10 (Monthly Report) 2012-01-21

August 25, 2016 Page B.B6-8

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2012-02-09 (Monthly Report) 2012-03-03 2012-03-16 (Monthly Report)

WorldView2 satellite image © 2012 DigitalGlobe

August 25, 2016 Page B.B6-9

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2012-04-01 2012-04-19 (Monthly Report) 2012-05-14 (Monthly Report)

Toe (Beach)

August 25, 2016 Page B.B6-10

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2012-06-04 (Monthly Report) 2012-07-13 (Monthly Report) 2012-09-02

August 25, 2016 Page B.B6-11

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2012-09-26 2013-01-01 2013-02-01

August 25, 2016 Page B.B6-12

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2013-03-02 2013-04-02 2013-05-01

August 25, 2016 Page B.B6-13

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2013-05-27 2013-06-27 (Monthly Report) 2013-06-30

Crest (Right Abutment)

August 25, 2016 Page B.B6-14

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2013-07-29 2013-07-29 (Monthly Report) 2013-08-01 (Monthly Report, survey date unknown)

Toe (Right Abutment)Crest (Right Abutment)

August 25, 2016 Page B.B6-15

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2013-09-03 2013-09-24 (Monthly Report) 2013-10-01

August 25, 2016 Page B.B6-16

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2013-10-27 2013-11-26 2013-12-27

August 25, 2016 Page B.B6-17

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2014-01-23 (Monthly Report) 2014-01-29 2014-03-28

August 25, 2016 Page B.B6-18

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2014-05-01 2014-06-03 2014-06-27

August 25, 2016 Page B.B6-19

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2014-08-04 2014-08-29 2014-09-26

Bathymetric contours

August 25, 2016 Page B.B6-20

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2014-10-31 2014-11-27 2014-12-29

August 25, 2016 Page B.B6-21

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2015-01-29 2015-02-27 2015-03-20

August 25, 2016 Page B.B6-22

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2015-04-24 2015-05-27 2015-06-22

August 25, 2016 Page B.B6-23

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2015-07-27 2015-08-24 2015-10-01

August 25, 2016 Page B.B6-24

Fundão Tailings Dam Review Panel Report on the Immediate Causes of the Failure of the Fundão DamAppendix B - Attachment B6 - Slimes Depositional History and Spatial Reconstruction

Mapped Slimes Boundaries

2015-10-27

August 25, 2016 Page B.B6-25