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Case Studies

Biodiversity

Biodiversity impacts
Units 2014 2015 2016 2017 2018

Sites in which biodiversity is covered in EIA or similar document

number

11 of 13

11 of 11

11 of 11

10 of 13

13 of 13

Mine lease area

thousand hectares

376

364

256

288

294

Potential area of impact

thousand hectares

185

185

44

59

59

Total IUCN-listed wildlife mortalities

number

237

244

129

117

128

Vulnerable

number

0

0

0

0

16

Endangered

number

1

1

0

0

0

Critically endangered

number

0

0

0

0

0

Near threatened

number

5

3

1

2

6

Least concern

number

231

240

128

110

106

Not specified

number

0

0

0

5

0

Closure and Reclamation

2018 Reclamation in progress by country in hectares (ha)
Country Reclamation area (ha)

Australia

1,065.4

Ghana

198.6

Peru

822.5

Suriname

33.0

U.S.

3,528.6

Total

5,648.1

Amount of land disturbed or rehabilitated (thousand ha)
2014 2015 2016 2017 2018

New disturbance during reporting period

0.39

0.30

0.59

0.71

0.50

Total reclamation in progress

4.40

3.61

4.20

5.04

5.65

Achieved reclamation (to agreed upon end use) during reporting period

0.04

0.04

0.00

0.18

0.15

Total disturbance not yet reclaimed to agreed upon end use at end of reporting period

31.70

31.93

31.64

33.12

34.18

2018 Amount of land disturbed or rehabilitated (ha)
New disturbance during reporting period Total reclamation in progress (cumulative) Achieved reclamation (to agreed upon end use) during reporting period Total disturbance not yet reclaimed to agreed upon end use at end of reporting period Mine lease area

Africa

56

199

30

3,474

61,637

Ahafo

54

173

30

2,357

55,362

Akyem

2

26

0

1,116

6,275

Australia

57

1,065

42

8,645

47,904

Boddington

2

251

31

4,092

9,642

KCGM

40

369

11

2,963

34,307

Tanami

15

445

0

1,589

3,955

U.S.

150

3,529

76

16,697

38,076

CC&V

22

177

3

1,268

2,431

Nevada (combined sites)

128

3,352

72

15,430

35,645

South America

238

855

0

5,363

146,858

Suriname

175

33

0

1,375

25,916

Peru

63

823

0

3,989

120,942

Total

501

5,648

148

34,179

294,475

Cyanide Management

Cyanide use (thousand tonnes)
2014 2015 2016 2017 2018

Sodium cyanide (NaCN)

46.2

49.2

57.8

68.6

59.1

2018 Cyanide incidents
Release off site requires response or remediation Adverse effects to health Adverse effects to the environment Required reporting under applicable regulations Exceedances of applicable limits of Cyanide Code Impact to biodiversity

Ahafo

0

0

0

0

0

0

Akyem

0

0

0

0

0

0

Boddington

0

0

0

3

4

0

KCGM

0

0

0

0

3

0

Tanami

0

0

0

0

12

2

CC&V

0

0

0

0

0

2

Nevada (combined sites)

0

0

0

5

2

0

Merian

0

0

0

0

0

0

Yanacocha

0

0

0

1

2

1

Total

0

0

0

9

23

5

Off-site releases requiring response or remediation not applicable for 2018. Cyanide-related biodiversity impacts are wildlife fatalities; for a full listing of wildlife fatalities, refer to the Biodiversity data tables.

Energy and Climate Change

Energy consumption: Direct and indirect energy by source (million gigajoules [GJ])
2014 2015 2016 2017 2018

Direct energy consumption by source

Direct non-renewable

52.1

45.8

33.3

37.0

37.0

Coal

26.4

18.9

10.1

10.4

10.8

Diesel

22.6

24.4

20.6

22.6

22.2

Waste oil

0.0

0.0

0.0

0.0

0.0

Gasoline

0.1

0.1

0.1

0.2

0.2

Natural gas

1.8

1.8

2.1

2.2

2.1

Propane

0.8

0.3

0.2

0.2

0.2

Heavy fuel oil

0.2

0.2

0.0

1.4

1.5

Aviation fuel

0.0

TR

0.2

0.0

0.0

Direct renewable energy consumption

0.3

0.3

0.2

0.2

0.2

Total direct energy consumed

52.4

46.0

33.5

37.2

37.2

Indirect energy consumption by source

Grid electricity from renewable sources

3.8

3.5

3.6

3.3

3.5

Grid electricity from non-renewable sources

5.2

6.5

8.6

8.9

8.6

Total grid electricity (indirect energy generation)

9.0

10.0

12.2

12.2

12.1

Total combined direct and indirect

61.4

56.0

45.7

49.4

49.2

Note: Years 2014 and 2015 include direct energy consumption from Batu Hijau before it was divested. Diesel energy consumption for 2016 and 2017 was corrected for energy content. Note: Data reflects total fuel usage for power production and mining operations, converted to gigajoules (GJ).
Total electricity consumption (million gigajoules [GJ])
2014 2015 2016 2017 2018

Total on-site (direct) electricity generated

8.9

6.7

3.8

3.8

4.7

Diesel power

0.7

0.9

0.7

0.6

0.8

Heavy fuel oil and waste oil

0.000

0.010

0.004

0.004

0.613

Coal-fired power

8.2

5.8

3.1

3.2

3.2

Natural gas–fired power

0.0

0.0

0.0

0.0

0.0

LPG/propane power

0.0

0.0

0.0

0.0

0.0

Total on-site (direct) electricity sold

1.1

1.2

0.0

0.0

0.0

Total on-site (direct) electricity consumed

7.8

5.5

3.8

4.3

4.7

Note: Data reflects total fuel usage for power production and mining operations, converted to gigajoules (GJ).
Direct non-renewable energy consumption by source as percentage of total consumption
2014 2015 2016 2017 2018

Coal

50.7%

41.3%

32.5%

32.8%

29.2%

Diesel

43.4%

53.3%

58.8%

58.6%

59.6%

Waste oil

<1%

<1%

0%

0%

0%

Gasoline

<1%

<1%

<1%

<1%

0.5%

Natural gas

3.5%

3.9%

6.8%

6.8%

5.5%

Propane

1.5%

<1%

<1%

<1%

0.6%

Heavy fuel oil

<1%

<1%

0%

<1%

4.0%

Aviation fuel

<1%

0%

<1%

0%

0%

2018 Electric power sourced from hydroelectric and other renewables (kWh)
Country Total electricity consumed from grid and site generation Total grid electricity from renewable sources Total site electricity from renewable sources Percent of electric power sourced from hydroelectric and other renewables

Ghana

518,019,765

195,878,811

75,074

37.8%

Peru

448,222,225

267,226,001

6,981

59.6%

U.S.

1,864,749,940

500,514,836

0

26.8%

Note: Australia and Suriname do not source electric power from hydroelectric and other renewable sources and are omitted from this table.
Greenhouse gas emissions (million tonnes CO2 equivalents)
2014 2015 2016 2017 2018

Total direct emissions (Scope 1)

4.10

3.80

2.70

3.10

3.11

From coal

2.10

1.70

0.90

1.00

1.07

From diesel

1.60

1.70

1.40

1.60

1.56

From waste oil

0.00

0.00

0.00

0.00

TR

From gasoline

0.01

0.01

0.01

0.01

0.01

From natural gas

0.09

0.09

0.10

0.11

0.11

From propane

0.05

0.02

0.01

0.01

0.01

From heavy fuel oil

0.02

0.02

0.00

0.01

0.11

From aviation fuel

0.00

0.00

0.01

0.00

TR

From ammonium nitrate, fuel oil (ANFO)

0.00

0.00

0.00

0.01

0.01

From heavy ANFO

0.01

0.01

0.00

0.00

0.00

From emulsion

0.01

0.02

0.01

0.01

0.01

From autoclave

0.11

0.11

0.11

0.11

0.10

From roasters

0.11

0.11

0.09

0.10

0.10

From quick lime production

0.04

0.04

0.00

0.00

0.01

From ARD neutralization

0.00

0.00

0.00

0.00

0.00

Sulfur hexafluoride (SF6)

TR

TR

TR

TR

0.00

Hydrofluorocarbon (HFC)

0.00

0.00

0.00

0.00

0.01

Methane (CH4)

TR

TR

TR

TR

TR

Total indirect emissions (Scope 2)

1.20

1.70

1.60

1.60

1.58

Total emissions (Scope 1 and 2)

5.30

5.50

4.30

4.70

4.69

TR = Trace, which is <0.0001
Note: Greenhouse gas emissions are calculated using emission factors from the Climate Registry and Australia National Greenhouse Accounts Factor. We do track and report Scope 3 emissions in our CDP Climate annual response.

Environmental Releases

Environmental releases by number of incidents
2014 2015 2016 2017 2018

Total environmental releases on site

84

43

81

78

50

Total environmental releases off site

0

0

0

1

0

Total environmental releases

84

43

81

79

0

Cyanide releases

76

41

77

77

2

Mercury releases

0

1

2

0

0

Significant hydrocarbon releases

6

1

1

0

0

Significant chemical releases

1

0

0

2

0

Other significant releases

1

0

1

0

0

Note: All cyanide releases in 2018 were on site, contained within the site boundaries and remediated according to applicable regulations. Significant releases are those categorized as having an environmental impact of level 3 or greater on a scale of level 1 to 5.
Environmental releases by volume
2014 2015 2016 2017 2018

Cyanide releases (kL)

99

582

2,500

3,406

5,768

Mercury releases (kg)

0

0.01

1.7

0

0

Significant hydrocarbon releases (kL)

42

2

2

0

0

Significant chemical releases (kL)

40

0

0

0

0

Other significant releases (kL)

5

0

31

0

0

Note: All cyanide releases in 2018 were on site, contained within the site boundaries and remediated according to applicable regulations. Significant releases are those categorized as having an environmental impact of level 3 or greater on a scale of level 1 to 5.

Waste Management

Waste stream estimates
Units 2014 2015 2016 2017 2018

Waste rock

Total waste rock generated

million tonnes

406.6

340.1

335.9

346.0

299.7

Potentially acid-generating waste rock

million tonnes

148.4

105.3

98.3

90.2

106.6

Non-potentially acid-generating waste rock

million tonnes

258.2

234.8

237.5

255.8

193.1

Tailings

Total tailings

million tonnes

146.1

135.9

96.8

110.9

112.1

Tailings to surface

million tonnes

124.1

94.6

96.8

110.9

111.7

In-pit tailings

million tonnes

0

0.1

0

0

0

Sub-surface tailings

million tonnes

0

0

0

0

0.4

Sub-sea tailings

million tonnes

21.9

41.2

0

0

0

Hazardous waste

Total hazardous waste generated

thousand tonnes

38.9

40.0

12.0

12.2

18.4

Total hazardous waste treated/disposed off-site

thousand tonnes

2.0

2.9

2.1

1.9

4.4

Total hazardous waste treated/disposed on-site

thousand tonnes

14.1

16.0

5.4

6.2

8.8

Total hazardous waste incinerated (includes on-site and off-site weight estimates)1

thousand tonnes

NR

NR

NR

NR

0.5

Total hazardous waste recycled (includes on-site and off-site weight estimates)2

thousand tonnes

22.9

21.2

4.5

4.1

4.6

Non-hazardous waste

Total non-hazardous waste generated3

thousand tonnes

49.5

46.0

34.8

38.1

66.9

Total non-hazardous waste disposed in on-site landfill

thousand tonnes

13.2

6.9

7.2

7.5

12.1

Total non-hazardous waste disposed in off-site landfill

thousand tonnes

7.9

14.4

6.3

4.4

5.1

Total non-hazardous waste incinerated (includes on-site and off-site weight estimates)

thousand tonnes

0.2

0.1

0.1

0.1

3.7

Total non-hazardous recycled waste (includes on-site and off-site weight estimates)3

thousand tonnes

28.2

24.6

21.2

26.2

46.0

Other

Elemental mercury (Hg)

tonnes

20.9

12.5

19.0

26.6

26.9

Note: All hazardous and non-hazardous wastes are based on weight and volume estimates provided by staff or from information provided by the waste treatment/disposal/recycling contractors. As enterprise-level data collection and reporting systems continue to expand, weight estimates may be restated in future reports.
1 Hazardous waste incinerated on site and off site is not reported (NR) prior to 2018.
2 Hazardous recycled waste data for 2018 includes reported estimates for on-site and assumptions for off-site that are based on 2017 data.
3 2018 non-hazardous generated and recycled totals exclude off-site recycled weight estimates for our Long Canyon site.
2018 Site-level tailings by type (metric tonnes)
Surface tailings Open pit tailings Sub-surface tailings Total produced Total disposed

Africa

14,317,370

0

0

14,317,370

14,317,370

Ahafo

6,367,713

0

0

6,367,713

6,367,713

Akyem

7,949,657

0

0

7,949,657

7,949,657

Australia

54,418,196

0

368,776

54,786,972

54,786,972

Boddington

39,991,262

0

0

39,991,262

39,991,262

KCGM

12,317,859

0

0

12,317,859

12,317,859

Tanami

2,109,075

0

368,776

2,477,851

2,477,851

North America

24,512,212

0

0

24,512,212

24,512,212

CC&V

1,357,057

0

0

1,357,057

1,357,057

Nevada (combined sites)

23,155,155

0

0

23,155,155

23,155,155

South America

18,441,624

0

0

18,441,624

18,441,624

Merian

12,970,318

0

0

12,970,318

12,970,318

Yanacocha

5,471,306

0

0

5,471,306

5,471,306

Total

111,689,402

0

368,776

112,058,178

112,058,178

Note: Newmont does not produce sub-sea tailings.
2018 Site-level waste rock generated by type (million metric tonnes)
Acid generating/metal leaching Non-acid generating/non-metal leaching Total waste rock generated

Africa

0.0

45.9

45.9

Ahafo

0.0

24.2

24.2

Akyem

0.0

21.7

21.7

Australia

28.3

35.1

63.4

Boddington

28.2

14.8

43.0

KCGM

0.1

19.5

19.6

Tanami

0.0

0.8

0.8

North America

54.6

83.2

137.8

CC&V

19.7

0.0

19.7

Nevada (combined sites)

34.9

83.2

118.1

South America

23.7

28.9

52.6

Merian

0.0

14.8

14.8

Yanacocha

23.7

14.0

37.7

Total

106.6

193.1

299.7

2018 Site-level mercury waste by site and type (metric tonnes)
Elemental mercury Mercuric chloride Mercury-tainted carbon Mercury-contaminated sludge Other mercury-related wastes Total

Africa

0.00

0.00

0.00

0.00

0.00

0.00

Ahafo

0.00

0.00

0.00

0.00

0.00

0.00

Akyem

0.00

0.00

0.00

0.00

0.00

0.00

Australia

0.01

0.00

18.10

0.00

0.40

18.51

Boddington

0.00

0.00

0.00

0.00

0.00

0.00

KCGM

0.01

0.00

18.10

0.00

0.40

18.51

Tanami

0.00

0.00

0.00

0.00

0.00

0.00

North America

23.96

0.00

4.78

0.00

10.40

39.14

CC&V

0.00

0.00

1.80

0.00

0.20

2.00

Nevada (combined sites)

23.96

0.00

2.98

0.00

10.20

37.14

South America

2.96

0.00

2.00

0.00

0.00

4.96

Merian

0.00

0.00

2.00

0.00

0.00

2.00

Yanacocha

2.96

0.00

0.00

0.00

0.00

2.96

Total

26.94

0.00

24.88

0.00

10.80

62.62

Estimated materials usage summary
Units 2014 2015 2016 2017 2018

Cement

thousand tonnes

81.7

72.8

65.1

71.2

78.1

Sodium cyanide (NaCN)

thousand tonnes

46.2

49.2

57.8

68.6

59.1

Grinding media

thousand tonnes

97.7

102.7

83.2

97.9

103.1

Lime

thousand tonnes

483.6

515.8

513.1

513.5

473.8

Tires (by weight)

thousand tonnes

12.8

12.2

9.2

10.0

8.1

Lubricants

thousand kL

13.2

11.1

12.5

12.1

12.3

Hydrochloric acid (HCl)

thousand kL

6.7

6.3

7.0

12.1

10.7

Sulfuric acid (H2SO4)

thousand kL

56.5

65.4

78.0

78.7

81.4

2018 Materials usage by site
Grind media Sodium cyanide (NaCN) Lime Cement Tires (by weight) Lubricants Hydro-chloric acid (HCL) Sulfuric acid (H2SO4)

Unit of measure

thousand tonnes

thousand tonnes

thousand tonnes

thousand tonnes

thousand tonnes

thousand kiloliters

thousand kiloliters

thousand kiloliters

Africa

16.7

3.8

13.7

0.0

1.2

3.2

1.0

0.0

Ahafo

7.3

1.9

5.4

0.0

0.8

2.7

0.5

0.0

Akyem

9.4

1.8

8.3

0.0

0.4

0.5

0.5

0.0

Australia

31.0

18.2

51.9

7.6

2.1

1.8

4.0

20.9

Boddington

20.8

8.9

19.9

0.0

1.1

1.5

1.8

19.3

KCGM

8.8

8.5

30.4

6.4

0.7

0.1

2.2

0.0

Tanami

1.3

0.7

1.6

1.2

0.2

0.2

0.1

1.6

North America

34.5

21.6

277.5

70.5

2.7

5.2

2.7

56.7

CC&V

0.8

5.8

77.1

0.0

0.5

0.9

0.5

0.0

Nevada (combined sites)

33.7

15.8

200.4

70.5

2.2

4.4

2.2

56.7

South America

21.0

15.6

130.7

3.2

2.1

2.2

3.0

3.9

Merian

7.6

3.4

18.7

0.0

0.6

0.9

1.1

0.0

Yanacocha

13.5

12.2

111.9

3.2

1.5

1.2

1.9

3.9

Total

103.1

59.1

473.8

78.1

8.1

12.3

10.7

81.4

Air Quality

Air emissions
Units 2014 2015 2016 2017 2018

SOx (SO2)

thousand tonnes

168.2

34.0

0.1

1.5

0.1

NOx (NO2)

thousand tonnes

6.4

7.1

5.5

6.9

6.2

PM10

thousand tonnes

19.0

19.8

17.3

16.7

16.6

Carbon monoxide (CO)

thousand tonnes

2.3

2.6

3.4

3.0

2.8

Mercury (Hg)

tonnes

4.0

2.4

0.4

0.7

0.6

Arsenic (As)

tonnes

4.6

3.9

3.4

3.0

2.8

Lead (Pb)

tonnes

0.5

0.6

0.6

0.6

0.6

Selenium (Se)

tonnes

4.1

0.1

0.1

0.1

0.1

Persistent organic pollutants (POPs)

tonnes

*

*

TR

TR

TR

Volatile organic compounds (VOCs)

thousand tonnes

*

*

0.5

0.4

0.3

TR = Trace, which is <0.0001
Note: Our Australia sites operated by Newmont report air emissions on a fiscal year basis (July 1 to June 30); however, Kalgoorlie Consolidated Gold Mines (KCGM) reports its air emissions on a calendar year basis (January 1 to December 31). Arsenic and lead figures omit North America sites; selenium figures reported for Ahafo, Boddington, Carlin sites only. VOCs omit South America sites. POP figures are estimates.
* Beginning in 2016, we expanded our air quality reporting to include POPs and VOCs.

Water

2018 Water summary by site (thousand kL)
Total water withdrawn Total water discharged Total water consumed (withdrawn minus total discharges) Total water recycled Total water used (consumed + recycled) Percent recycled (total water recycled/total water used) Water intensity (2018) – total water consumed

Ahafo

10,422

5,046

5,375

7,070

12,445

57%

12.0

Akyem

14,651

1,631

13,020

8,512

21,532

40%

31.0

CC&V

3,213

57

3,156

53,688

56,844

94%

9.0

Carlin

48,820

39,510

9,310

55,231

64,541

86%

10.0

Twin Creeks

20,847

12,908

7,938

18,855

26,794

70%

22.0

Phoenix

6,895

32

6,863

13,826

20,689

67%

20.0

KCGM

9,790

2,832

6,958

10,726

17,684

61%

22.0

Boddington

17,827

0

17,827

37,730

55,557

68%

15.0

Tanami

2,558

0

2,558

7,656

10,214

75%

5.0

Yanacocha

63,995

37,541

26,454

37,628

64,082

59%

51.0

Merian

30,565

25,829

4,736

16,338

21,074

78%

9.0

Long Canyon

675

54

621

4,439

5,060

88%

4.0

Total

230,257

125,441

104,816

271,699

376,515

72%

17.3

2018 Water withdrawal by site (thousand kL)
Surface water Groundwater1 Precipitation2 Municipal water Total water withdrawn

Ahafo

0

2,918

7,503

0

10,422

Akyem

583

2,143

11,925

0

14,651

CC&V

0

0

1,667

1,546

3,213

Carlin

286

46,983

1,551

0

48,820

Twin Creeks

0

19,896

950

0

20,847

Phoenix

0

5,901

994

0

6,895

KCGM

0

5,464

2,360

1,966

9,790

Boddington

4,588

4,522

8,672

45

17,827

Tanami

0

2,412

146

0

2,558

Yanacocha

0

23,443

40,552

0

63,995

Merian

0

926

29,639

0

30,565

Long Canyon

0

631

44

0

675

Total

5,458

115,238

106,003

3,557

230,257

1 Groundwater does not include entrainment in ore.
2 Precipitation does not include waste rock (TSF and heap leach only) at all facilities with the exception of Yanacocha, Akyem and Boddington which capture and treat.
2018 Total untreated water by destination and site (thousand kL)
Untreated Discharge to external organizations for reuse Untreated discharge to groundwater Untreated discharge to sewers Untreated discharge to surface water Untreated discharge to ocean Total untreated water discharge

Ahafo

0

0

0

3,686

0

3,686

Akyem

0

173

0

0

0

173

CC&V

0

0

0

57

0

57

Carlin

0

0

0

19,458

0

19,458

Twin Creeks

0

0

0

0

0

0

Phoenix

0

0

0

32

0

32

KCGM

43

2,789

0

0

0

2,832

Boddington

0

0

0

0

0

0

Tanami

0

0

0

0

0

0

Yanacocha

0

0

0

280

0

280

Merian

0

0

0

0

0

0

Long Canyon

0

0

0

54

0

54

Total

43

2,962

0

23,568

0

26,573

2018 Total treated water by destination and site (thousand kL)
Treated discharge to surface water by acid water treatment Treated discharge by other Treated discharge by process water treatment Treated discharge by reverse osmosis Treated discharge by sewage treatment Total treated water discharge

Ahafo

0

0

0

1,360

0

1,360

Akyem

0

1,458

0

0

0

1,458

CC&V

0

0

0

0

0

0

Carlin

0

20,051

0

0

0

20,051

Twin Creeks

0

12,908

0

0

0

12,908

Phoenix

0

0

0

0

0

0

KCGM

0

0

0

0

0

0

Boddington

0

0

0

0

0

0

Tanami

0

0

0

0

0

0

Yanacocha

13,843

0

0

23,418

0

37,261

Merian

0

25,829

0

0

0

25,829

Long Canyon

0

0

0

0

0

0

Total

13,843

60,247

0

24,778

0

98,868

2018 Water withdrawal and discharge by category1 and site (thousand kL)
Total water withdrawnTotal water discharged
Category 1 Category 2 Category 3 Total Category 1 Category 2 Category 3 Total

Ahafo

7,503

2,918

0

10,422

5,046

0

0

5,046

Akyem

14,068

583

0

14,651

0

1,631

0

1,631

CC&V

3,213

0

0

3,213

57

0

0

57

Carlin

23,478

25,341

0

48,820

39,482

27

0

39,510

Twin Creeks

950

19,896

0

20,847

12,908

0

0

12,908

Phoenix

1,017

3,908

1,970

6,895

0

32

0

32

KCGM

4,326

0

5,464

9,790

0

0

2,832

2,832

Boddington

6,967

4,522

6,338

17,827

0

0

0

0

Tanami

146

1,241

1,171

2,558

0

0

0

0

Yanacocha

40,552

0

23,443

63,995

13,843

23,698

0

37,541

Merian

177

29,639

749

30,565

0

25,829

0

25,829

Long Canyon

675

0

0

675

54

0

0

54

Total

103,073

88,049

39,135

230,257

71,391

51,218

2,832

125,441

1 Water quality categories are based on the Minerals Council of Australia definitions.
Water summary1 (thousand kL)
2014 2015 2016 2017 2018

Total water withdrawn

509,028

503,029

201,152

217,327

230,257

Surface water

52,574

9,595

14,595

8,285

5,458

Groundwater

144,975

124,351

111,420

110,701

115,238

Precipitation

89,884

95,074

70,800

94,216

106,003

Municipal water

1,750

2,275

4,337

4,126

3,557

Ocean water used for processing

30,809

62,687

0

0

0

Ocean water used for cooling

189,036

209,048

0

0

0

Total water consumed (total withdrawn minus total discharged)

146,154

128,874

107,586

115,747

104,816

Total water recycled

229,011

185,742

227,960

297,379

271,699

Total water used (consumed + recycled)

375,165

314,616

335,546

413,126

376,515

Percent recycled (total water recycled/total water used)

61%

59%

68%

72%

72%

1 Total water consumed, total water withdrawn, and ocean water used for processing and cooling decreased significantly beginning in 2016 due to the divestiture of our Batu Hijau operation in Indonesia.
2018 Total water discharge by destination (thousand kL)
2014 2015 2016 2017 2018

Untreated discharge to external organizations for reuse

507

557

0

0

43

Untreated discharge to groundwater

27,374

1,815

0

4,194

2,962

Untreated discharge to sewers

0

0

0

0

0

Untreated discharge to surface water

47,109

83,924

18,017

30,575

23,568

Untreated discharge to ocean

189,036

209,048

0

0

0

Total untreated water discharge

264,026

295,344

18,017

34,769

26,573

Treated discharge to surface water by acid water treatment

30,076

29,809

25,542

23,465

13,843

Treated discharge by other

53,220

38,882

35,858

27,795

60,247

Treated discharge by process water treatment

4,051

0

0

0

0

Treated discharge by reverse osmosis

11,066

10,120

14,149

15,551

24,778

Treated discharge by sewage treatment

434

0

0

0

0

Total treated discharge of water

98,848

78,811

75,549

66,811

98,868

2018 Consumptive water quality (ML)
Water quality1 Total As a % of total

Category 1

31,682

30%

Category 2

36,831

35%

Category 3

36,303

35%

1 Water quality categories are based on the Minerals Council of Australia definitions.