How can you help reduce the environmental impact of mining?
Discover five ways the mining industry can reduce environmental impact and make its practices more sustainable.
- Lower-Impact Mining Techniques.
- Reusing Mining Waste.
- Eco-Friendly Equipment.
- Rehabilitating Mining Sites.
- Shutting Down Illegal Mining.
- Improving Mining Sustainability.
How can we solve mining problems?
How can mining become more environmentally sustainable?
- Reduce inputs. The mining industry uses a large amount of water and land in their operations.
- Reduce outputs.
- Proper waste disposal.
- Improving the manufacturing process.
- Close and reclaim shut-down mines.
- Replenishing the environment.
- Final words.
What are mining companies doing to help the environment?
Measures like reducing energy and water consumption, limiting waste production and minimising land disturbances, preventing pollution on sites (including air, water and soil pollutions) and ensuring the efforts on closures and reclamations of sites is carried out to the highest levels.
What is the environmental impact of coal mining?
The clearing of trees, plants, and topsoil from mining areas destroys forests and natural wildlife habitats. It also promotes soil erosion and flooding, and stirs up dust pollution that can lead to respiratory problems in nearby communities.
What are 3 negative effects of coal mining?
Air pollution from coal-fired power plants is linked with asthma, cancer, heart and lung ailments, neurological problems, acid rain, global warming, and other severe environmental and public health impacts.
What is the environmental impact of longwall mining?
Since longwall mining causes subsidence through the overlying strata to the ground surface, the surface water and groundwater above the longwall panels may be affected and drained into the lower levels. Therefore, loss or interruption of streams and overburden aquifers is a common concern in coal industry.
What are the environmental impacts of room and pillar mining?
Underground mining for coal by longwall or room-and-pillar mining methods often interrupts and depletes groundwater and can alter its quality. Surface mining can enhance the introduction of surface water with dissolved solids into shallow and then deeper groundwater systems through fractures or other conduits.
What is the General Mining Law of 1872 and what did it do?
The General Mining Law of 1872 regulates the mining of certain mineral resources on federal public domain lands. The law permits individuals and corporations to prospect on public domain lands and to stake claims on mineral discoveries they make.
Which type of roof support is mainly used in longwall mining?
As the coal is cut, the longwall face is supported with hydraullically operated supports. The function of these supports is to provide a safe working environment by supporting the roof as coal is extracted as well as advancing the longwall equipment.
What is a longwall face?
The end of the block that includes the longwall equipment is called the face. The other end of the block is usually one of the main travel roads of the mine. The cavity behind the longwall is called the goaf, goff or gob.
What is GOAF line?
Noun. goaf (plural goafs or goaves) A rick or stack (of hay, etc.) when laid up inside a barn. (mining) That part of a mine from which the mineral has been partially or wholly removed.
What is Shortwall mining?
Shortwall mining is a method of mining in which a continuous miner cuts and loads from the short end of a rectangular pillar of coal while hydraulically powered self-advancing roof supports provide protective cover.
How does room and pillar mining work?
Room and pillar (variant of breast stoping), is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. To do this, “rooms” of ore are dug out while “pillars” of untouched material are left to support the roof overburden.
What is thick seam mining?
Thick coal seamsreferto those with a seam thickness greater than 3.5 m. There are several countries with thick coal seam resources, including China, United States, Australia, Poland, and India. China has abundant resources of thick coal seams.
What is the thickest coal seam?
What are the main problem in thick seam mining?
The geo-technical problems faced in thick seam mining in India are multi-fold, notables are conventional supports having serious limitations, inadequate rib design resulting into ineffectiveness and many time unpredictability at the goaf edges and risky caving in-bye.
What is blasting gallery method?
Blasting gallery (BG) method is the appropriate method for the extraction of thick seams up to a thickness of 8 – 11 metres.Mining by BG method produces about 1000 T/day with 85 % of extraction. Earlier experiment. • The 1st BG Panel was started in the country at East Katras colliery in Jharia Coal fields (BCCL) in …
What is BG applicability method?
Blasting Gallery (BG) method is suitable for extraction of virgin thick seams as well as developed pillars in thick seams in single lift. The method was very successful resulting in 85% of extraction with high productivity. But, this method experienced strata control problems during final extraction.
Which coal is found in Singrauli?
How thick is a coal seam?
A coal seam of around 3–4 m thickness is, generally, observed to provide normal working height for efficient extraction and is suitable for most of the conventional mining methods. Considerable increase in thickness of a coal seam makes it challenging for efficient underground mining and is called thick.
Which of the following are the components of a coal mining technology?
Coal seams can be mined by surface or underground methods (Figure 4.3), with the choice of mining method dictated by both technical and economic factors. The most important technical factors are the thickness of the coal seam, the depth of the coal seam, the inclination of the seam, and the surface topography.
What are the four methods of mining?
The American Geosciences web site defines four main mining methods: underground, open surface (pit), placer, and in-situ mining.
- Underground mines are more expensive and are often used to reach deeper deposits.
- Surface mines are typically used for more shallow and less valuable deposits.
What are the two methods used for mining coal?
Surface mining and deep underground mining are the two basic methods of mining. The choice of mining method depends primarily on depth, density, overburden, and thickness of the coal seam; seams relatively close to the surface, at depths less than approximately 55 m (180 ft), are usually surface mined.
What are the 3 types of mines?
Open-pit, underwater, and underground mining. These are the three main methods of mining we use to extract our products from the ground. In this Digging Deeper article, we take a look at these different methods and provide a glimpse into what each involves.
What is the most common technique for coal mining?
Surface/Opencast As one of the most popular methods of coal mining, the surface technique consists of five main forms: strip mining, open-pit mining, mountaintop removal, dredging and highwall mining.
What is the main use of coal today?
Although coal use was once common in the industrial, transportation, residential, and commercial sectors, today the main use of coal in the United States is to generate electricity. (Learn more about historical U.S. energy consumption.) The electric power sector accounts for most of U.S. coal consumption.
How beneficial is coal to life?
Power generation is the primary use for coal worldwide. Thermal coal is burnt to create steam that drives turbines and generators for the production of electricity. Metallurgical (coking) coal is a key ingredient in steelmaking. Coal converted to coke is used to produce around 70% of the world’s steel.
What are the 3 biggest uses of natural gas?
The commercial sector uses natural gas to heat buildings and water, to operate refrigeration and cooling equipment, to cook, to dry clothes, and to provide outdoor lighting. Some consumers in the commercial sector also use natural gas as a fuel in combined heat and power systems.