tailings
nounPronunciation: /ˈteɪlɪŋz/
Fine-grained waste material left over after extracting valuable minerals from ore during mining operations.
Full Definition
Tailings are the fine-grained waste products that remain after the economically valuable portions of ore have been extracted through various processing methods such as crushing, grinding, and chemical treatment. These materials typically contain residual chemicals used in processing and can pose environmental hazards if not properly managed. In abandoned mine reclamation, tailings often require specialized containment and treatment due to their potential for leaching contaminants into groundwater and surface water. The management of tailings is a critical component of comprehensive mine closure and reclamation planning.
Plain English
The leftover rocky waste material from mining that looks like sand or mud and may contain harmful chemicals that need to be safely contained.
In Editorial Context
A key technical term in abandoned mine reclamation content that requires careful explanation for general audiences, often accompanied by environmental impact discussions and remediation strategies.
Etymology & History
Term emerged during the California Gold Rush as mining operations became more industrialized and produced large quantities of waste material.
Originally referred to any mining waste, but now specifically denotes fine-grained processed waste distinct from coarse waste rock.
Usage
"The editorial team emphasized that tailings remediation would be the most costly component of the abandoned copper mine reclamation project."
Usage note: Always used in plural form even when referring to the material in general.
Context: mine reclamation, environmental assessment, regulatory compliance
Region: international
Also known as
Contrasted with
Don't confuse with
Unlike waste rock, tailings are processed materials that have been chemically treated and are typically much finer in particle size.