Mine safety
Mine safety is a broad term referring to the practice of controlling and managing a wide range of hazards associated with the life cycle of mining-related activities. Mine safety practice involves the implementation of recognised hazard controls and/or reduction of risks associated with mining activities to legally, socially and morally acceptable levels. While the fundamental principle of mine safety is to remove health and safety risks to mine workers, mining safety practice may also focus on the reduction of risks to plant (machinery) together with the structure and orebody of the mine.[1]
Safety has long been a concern in the mining business, especially in underground mining. The Courrières mine disaster, Europe's worst mining accident, involved the death of 1,099 miners in Northern France on March 10, 1906. This disaster was surpassed only by the Benxihu Colliery accident in China on April 26, 1942, which killed 1,549 miners.[3] While mining today is substantially safer than it was in previous decades, mining accidents still occur. Government figures from China indicate that 5,000 Chinese miners die in accidents each year, while other reports have suggested a figure as high as 20,000.[4] Mining accidents continue worldwide, including accidents causing dozens of fatalities at a time such as the 2007 Ulyanovskaya Mine disaster in Russia, the 2009 Heilongjiang mine explosion in China, and the 2010 Upper Big Branch Mine disaster in the United States.
Hazards and prevention
Ventilation
Mining ventilation is a significant safety concern for many miners. Poor ventilation inside sub-surface mines causes exposure to harmful gases, heat, and dust, which can cause illness, injury, and death. The concentration of methane and other airborne contaminants underground can generally be controlled by dilution (ventilation), capture before entering the host air stream (methane drainage), or isolation (seals and stoppings).[5] A ventilation system is set up to force a stream of air through the working areas of the mine. The air circulation necessary for effective ventilation of a mine is generated by one or more large mine fans, usually located above ground. Air flows in one direction only, making circuits through the mine such that each main work area constantly receives a supply of fresh air. Watering down in coal mines also helps to keep dust levels down: by spraying the machine with water and filtering the dust-laden water with a scrubber fan, miners can successfully trap the dust.[5]
Gases in mines can poison the workers or displace the oxygen in the mine, causing
Gas ignition
Ignited
Noise
The preferred prevention strategy involves engineering controls to eliminate noise sources. Administrative controls and hearing protection can also be used when engineering controls are not feasible.[9]
Cave-ins and rock falls
Since mining entails removing dirt and rock from its natural location, thereby creating large empty pits, rooms, and tunnels,
Heat exposure
High temperatures and humidity may result in heat-related illnesses, including heat stroke, which can be fatal. The presence of heavy equipment in confined spaces also poses a risk to miners. To improve the safety of mine workers, modern mines use automation and remote operation including, for example, such equipment as automated loaders and remotely operated rockbreakers. However, despite modern improvements to safety practices, mining remains a dangerous occupation throughout the world.
Use of explosives
Explosives are used in mines for constructive purposes, but can be hazardous if proper safety measures are not taken. For example, flyrock can be ejected beyond the blast site, causing personal injuries and damage to property.
Dust exposure
In coal mining, the extraction, crushing, and transport of coal can generate significant amounts of airborne respirable (extremely fine) coal dust. Dust less than 10 microns in size cannot be seen with the eye. In non-coal mining, stone, and sand and gravel mining operations and for particular occupations in coal mines, the respirable
Abandoned mines
There are upwards of 560,000 abandoned mines on public and privately owned lands in the United States alone.[13][14] Abandoned mines may be dangerous to anyone who attempts to explore them without proper knowledge and safety training.
Regulations
In the United States, the Mine Safety and Health Administration (MSHA) develops and enforces regulations to ensure mining safety.[15] Additionally, the National Institute for Occupational Safety and Health (NIOSH) researches occupational health issues related to mining, which is a priority industry sector in the National Occupational Research Agenda (NORA).[16][17] Several organizations impose self-assessments in efforts to ensure the safety of individual workers in compliance with these regulations;[18] the Neil George Safety System was among the first of these programs established in the mining industry.[19]
See also
- Mining accident
- Escape respirator
References
- ^ Ninness, John (2019-05-08). "What is mining safety?". Australasian Mine Safety Journal. Retrieved 2019-07-09.
- ^ Mañas Mármol, Francisco (31 July 2011). "San Vicente: Un pozo de leyenda". Linares28.es. Archived from the original on 9 June 2015. Retrieved 28 May 2013.
- ISBN 9780806525587.
- ^ "Where The Coal Is Stained With Blood". TIME. March 2, 2007
- ^ a b c "NIOSH Mining Safety and Health Ventilation". United States National Institute for Occupational Safety and Health. Retrieved 2007-10-29.
- ^ NIOSH, Coal Mine Explosion Prevention Archived July 4, 2012, at the Wayback Machine
- ^ a b c Peterson, J.S.; P.G. Kovalchik; R.J. Matetic (2006). "Sound power level study of a roof bolter" (PDF). Trans Soc Min Metal Explor (320): 171–7. Archived from the original (PDF) on January 15, 2009. Retrieved 2009-06-16.
- ^ . Retrieved 9 July 2012.
- ^ "Hearing Loss Prevention Overview". www.cdc.gov. Retrieved 2017-02-13.
- ^ NIOSH Ground Control Program Archived May 17, 2012, at the Wayback Machine
- ^ "Respirable Dust". www.cdc.gov. Retrieved 2017-01-24. This article incorporates text from this source, which is in the public domain.
- . Retrieved 2017-02-13.
- ^ Kertes, N., (March, 1996). US abandoned mine count still a mystery - General Accounting Office report. American Metal Market, Retrieved August 27, 2007, [6]
- ^ People, Land, and Water (March, 2007). KEEP OUT! Old Mines Are Dangerous. Office of Surface Mining: U.S. Department of the Interior. Retrieved Aug, 27, 2007. Archived 2009-12-05 at the Wayback Machine
- ^ "Mission | Mine Safety and Health Administration (MSHA)". www.msha.gov. Retrieved 2016-07-25.
- ^ "About the NIOSH Mining Program". www.cdc.gov. 2 December 2019. Retrieved 2022-02-14.
- ^ "NORA Mining Sector Council | NIOSH | CDC". www.cdc.gov. 2017-10-24. Retrieved 2018-02-22.
- .
- ^ "Five Simple Steps to Safety". Canadian Mining Journal. 1 October 2004. Retrieved 15 July 2016.