acid rock drainage (ARD)
When rock surfaces are exposed to air and rain, a reaction can occur with the elements in the rock which results in a change in the characteristics of the water that drains off. If the rock contains sulphides, oxidation processes can acidify the water. This process is known as acid rock drainage (ARD).
Biodiversity is the variety of plants, animals and micro-organisms, their genetic variation and the different ecosystems of which they inhabit.
carbon dioxide equivalent (CO2-e)
Carbon dioxide equivalent is a standard measurement used to indicate the impact of various greenhouse gas emissions on global warming relative to the same amount of carbon dioxide (CO2).
The Prominent Hill operation produces copper concentrate. This is a fine grained material that contains a percentage of copper, gold and other minerals which has been concentrated to increase its copper content through the removal of waste materials. Copper concentrate is used by smelters to produce copper in its metal form.
The area covered by OZ Minerals’ operations and activities.
Global Reporting Initiative (GRI)
An international multi-stakeholder process aimed at producing and disseminating globally applicable sustainability reporting guidelines. These guidelines are for voluntary use by organisations for reporting on the economic, environmental and social dimensions of their activities, products and services. For more information, see www.globalreporting.org.
greenhouse gases (GHG)
Gases in the earth’s atmosphere that absorb and re-emit infrared radiation, including carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulphur hexafluoride (SF6).
gross domestic product (GDP)
The total market value of the goods and services produced by a country’s economy during a specific period of time.
gross state product (GSP)
The total market value of the goods and services produced by a state or territory’s economy during a specific period of time.
Basic standards of treatment to which all people are entitled, regardless of nationality, gender, race, economic status or religion.
IUCN Red List
The International Union for Conservation of Nature’s (IUCN) Red List provides information about the characteristics, conservation status and distribution of flora and fauna species facing the risk of global extinction.
Key Performance Indicator.
One kilolitre is equal to one thousand litres.
Lost Time Injury Frequency Rate (LTIFR)
A Lost Time Injury is a work-related injury or illness resulting in an absence from rostered work of at least one full day or shift anytime after the day or shift on which the injury occurred. The LTIFR is the number of LTIs per million hours worked.
One megalitre is equal to one million litres.
One petajoule is equal to 1,015 joules.
Any person, group or interested party that may be impacted by OZ Minerals’ operations, activities or performance.
Finely ground materials from which valuable minerals have been largely extracted.
tailings storage facility
Facility designed for the storage of tailings material produced during ore processing.
Total Recordable Injury Frequency Rate (TRIFR)
TRIFR is the total number of recordable injuries per million working hours. ‘Recordable Injuries’ include those that result in lost time, medical treatment and restricted work injuries. First aid injuries are not included.
Material such as soils, barren or uneconomic mineralised rock that surrounds a mineral orebody and must be removed in order to mine the ore.