Coal mining refers to the process of extracting from underground or surface mines, coal- a black, burnable rock to use for energy.
The importance of coal mining is rooted in its contribution to various sectors, especially in electricity generation where it remains a significant energy source (Explore How to Mine Coal, n.d.).
Different techniques are employed to mine coal, depending on the geology of the coal deposits. These techniques are broadly categorized into underground mining and surface mining. Underground mining is used for deeper deposits and includes methods such as room-and-pillar, longwall mining, and shortwall mining.
Surface mining is generally used for deposits that are close to the earth’s surface and includes methods like strip mining, open-pit mining, and mountain top removal (Explore How to Mine Coal, n.d.).
Each technique requires specific machinery and equipment to efficiently extract coal, draglines being one of the equipment.
A dragline is a mechanical excavator and crawler used during large-scale works. A mining dragline dismantles and moves overburden in a similar way to a crane. A massive bucket is cast out from the machine’s body and then pulled inwards, shoveling material along the way (redback, 2023).
The dragline, with its long boom and large bucket, efficiently removes overburden, moving earth from one location to another without needing additional hauling equipment. This reduces both the cost and the carbon footprint, by minimizing the number of machines on site and the associated fuel consumption (Erectors, 2024).
Have you ever worked on a site that used draglines? What was your experience like? Share in the comments.
References:
Erectors, R. (2024, December 19). Dragline Excavators: Unleashing the Titans of the Mining Industry — Resource Erectors. Medium. https://mining-recruitment.medium.com/dragline-excavators-unleashing-the-titans-of-the-mining-industry-resource-erectors-058bac429ce8
Explore How to Mine Coal: Key Equipment and Machinery – chihongadmin. (n.d.). Retrieved April 9, 2025, from https://www.ytchihong.com/industry-news/explore-how-to-mine-coal-key-equipment-and-machinery/
redback. (2023, September 6). Dragline Mining Demolition Australia. Major Projects Group. https://www.majorprojects.net/dragline-mining-demolition-guide/
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