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Accidental Discharges of Hydrocarbons (litres)

	Aluminium	Base Metals	Carbon Steel Materials	Stainless Steeel Materials	Energy Coal	Petroleum	Diamonds & Specialty Products	BHP Billiton Total
Discharged to land*	1 490	11 910	65 220	250	9 360	790	150	89 275
Discharged to water	0	7 570	6 450	0	0	1 300	0	15 320

*Includes hydrocarbons released to secondary containment facilities and subsequently recovered.

Land – Rehabilitation and Disturbance (land area – hectares)

	Aluminium	Base Metals	Carbon Steel Materials	Stainless Steeel Materials	Energy Coal	Petroleum	Diamonds & Specialty Products	BHP Billiton Total
Newly disturbed	280	80	1 230	70	1 490	130	260	3 540
Rehabilitated	160	200	550	30	610	0	0	1 7901
Land requiring rehabilitation*	6 840	12 400	41 290	1 480	13 610	140	1 400	77 160

1. Includes 224 hectares of rehabilitated land at our Beenup site in Western Australia.
*Assumes immediate closure of all operations.

Water Consumption (megalitres)

	Aluminium	Base Metals	Carbon Steel Materials	Stainless Steeel Materials	Energy Coal	Petroleum	Diamonds & Specialty Products	BHP Billiton Total
Fresh water	9 460	60 750	33 990	14 730	7 730	5 820	150	132 630
Recycled water	2 470	48 610	38 730	64 710	16 490	10	4 330	175 350

One megalitre is equal to 106 litres.

Total Energy Use by Type (petajoules)

	Aluminium	Base Metals	Carbon Steel Materials	Stainless Steeel Materials	Energy Coal	Petroleum	Diamonds & Specialty Products	BHP Billiton Total
Coal and coke	29.2	0.0	15.7	27.5	0.0	0.0	0.0	72.4
Electricity	51.7	9.9	16.1	18.1	3.9	-0.1	0.0	99.6
Natural gas	22.1	1.5	34.4	6.9	0.0	10.2	0.0	75.1
Distillate	1.6	5.5	14.2	0.9	6.2	2.4	2.8	33.7
Fuel and process oil	0.5	0.5	0.3	7.0	0.2	0.2	0.0	8.7
Other types	0.0	0.0	0.0	1.1	0.0	1.9	0.0	2.9
Total	105.2	17.3	80.7	61.4	10.3	14.6	2.8	292.4

One petajoule is equal to 1015 joules. Totals may differ due to rounding of data.

Greenhouse Gas Emissions (’000 tonnes of C02-e)

	Aluminium	Base Metals	Carbon Steel Materials	Stainless Steeel Materials	Energy Coal	Petroleum	Diamonds & Specialty Products	BHP Billiton Total
Carbon dioxide	17 964	1 982	7 905	7 664	1 497	975	199	38 190
Methane	0	0	5 461	0	1 883	209	0	7 550
Perfluorocarbons (PFCs)	1 328	1.5	34.4	6.9	0.0	10.2	0.0	1 330
Total	19 292	1 982	13 367	7 664	3 380	1 184	199	47 070

CO2-e = Carbon dioxide equivalent (the basis of comparing the warming effect of greenhouse gases such as carbon dioxide, methane, perfluorocarbons, etc.)

Other Gaseous Emissions (tonnes)

	Aluminium	Base Metals	Carbon Steel Materials	Stainless Steeel Materials	Energy Coal	Petroleum	Diamonds & Specialty Products	BHP Billiton Total
Oxides of sulphur	28 900	780	1 820	17 220	640	510	150	50 020
Oxides of nitrogen	5 680	5 590	16 430	5 960	5 740	5 590	4 630	49 640
Fluoride	910	0	0	0	0	0	0	910

Waste (tonnes)

	Aluminium	Base Metals	Carbon Steel Materials	Stainless Steeel Materials	Energy Coal	Petroleum	Diamonds & Specialty Products	BHP Billiton Total
Waste oil disposed	550	3 280	3 180	280	760	250	0	8 310
Other hazardous waste	21 350	1 780	3 440	39 570	1 150	4 240	100	71 630
General waste to landfill	20 110	27 080	49 250	3 150	13 080	2 340	260	115 280

The data presented above do not include recycled materials, waste rock, tailings, coal reject and slag.