Spontaneous Combustion
nounPronunciation: /ˌspɑntˈeɪniəs kəmˈbʌʃən/
Self-ignition of coal, sulfide minerals, or carbonaceous materials in abandoned mines due to exothermic oxidation reactions, often triggered by exposure to air and moisture. This hazard requires careful monitoring and may necessitate inert gas injection or sealed closure.
Plain English
The spontaneous ignition of coal or mineral deposits underground without an external flame or heat source.
Etymology & History
Usage
"The abandoned coal mine required spontaneous combustion risk assessment before any disturbance during reclamation work."
Style guide notes: Capitalize only if part of a formal hazard classification name; otherwise use lowercase in general text.
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Frequently Asked Questions
Which mining materials are prone to spontaneous combustion?
Coal, pyrite, chalcocite, and other sulfide minerals with high surface area are most susceptible to self-ignition.
How do reclamation projects prevent spontaneous combustion?
Inert gas injection, water saturation, air exclusion, or complete sealing of mines are common mitigation strategies.
Why Test Candidates on This?
Spontaneous combustion hazard identification is critical for mine closure safety planning and environmental compliance.
Required skill level: Mid