Why are minerals mined only in those regions where they occur in the form of ores?
Minerals are mined in regions where they occur as ores because ores have a higher concentration of the desired mineral, making extraction more economical and feasible. Mining in regions where minerals occur as ores also reduces the need for extensive processing to extract the desired mineral.
What factors may impact on it diamonds sustainability?
Factors impacting diamonds sustainability include unethical mining practices, human rights abuses, environmental degradation, and lack of transparency in the supply chain. It is important for the diamond industry to address these issues through responsible sourcing, fair labor practices, and community development initiatives to improve sustainability.
What are the duties of the mining supervisor underground?
A mining supervisor underground is responsible for overseeing and coordinating all mining activities below ground, ensuring adherence to safety protocols, managing a team of miners, optimizing production efficiency, conducting inspections, and reporting to upper management on progress and issues. They also play a key role in problem-solving, implementing plans, and maintaining equipment to ensure smooth operations.
What is the density of iron ore in dust vs solid?
The density of iron ore dust is typically around 2,500-3,000 kg/m³, while the density of solid iron ore is around 4,000-5,000 kg/m³. The higher density of solid iron ore is due to the particles being closely packed together in a solid state compared to the looser arrangement of particles in dust form.
In undergound mining, ore or coal is removed, creating an empty space underground. After mining, the rock is allowed to settle and close the empty space. The ground above the mined area subsides, or moves down,
What are the four different types of mining?
The four main types of mining are surface mining, underground mining, placer mining, and in-situ mining. Surface mining involves removing soil and rock to access minerals, while underground mining involves tunnels and shafts to access deposits. Placer mining involves extracting minerals from loose deposits like sand and gravel, while in-situ mining involves extracting minerals without removing the ore body from the ground.
Why was placer mining the most widely used method o mining for gold?
1 - low cost to start. Just need to get to the area where gold has been discovered, stake a claim, and buy some hand tools.
2 - gold is "free" or liberated from the other rock in which it is engrained. Moving water has performed the work of expensive mills that are used in hard rock sources to break the rock down and free up the gold that is in it.
What would be the best method for a mining company to mine placer deposits?
The best method for a mining company to mine placer deposits would be through placer mining techniques such as panning, sluicing, or dredging. These methods involve using water to separate valuable minerals from sediment and are generally more cost-effective and environmentally friendly compared to other mining methods. Conducting thorough exploration and sampling before mining can also help determine the most efficient and profitable approach.
Recycling minerals generally consumes less energy compared to mining and processing new minerals. It can save up to 95% of the energy needed to produce metals from raw materials. This is because recycling requires less processing and transportation of materials.
Mining is removing a mineral or metal from the earth to use it or sell it. When the substance being mined is close to the surface, it is simply dug out of the ground (surface mining). However, if the substance is deep underground, a shaftway may be dug to reach the material, much like a tunnel. That is underground mining.
What is the process in which a mining company restores the land after mineral extraction?
After mineral extraction, a mining company typically engages in land reclamation. This process involves reshaping the land to its original contours, addressing any erosion issues, and replanting native vegetation. The goal is to restore the land to a condition that can support wildlife, vegetation, and other uses.
What is Cutback or Push back in Surface mining?
An open pit mine is developed as a series of nested pits, each larger in area than the
previous pit. A pushback is the removal of material required to proceed from one pit to the
next.
What are 4 different types of mining?
If you think to British Columbia (please don't use abbreviations) the answer is yes; possible industrial mining in the future.
Is mining good or bad for the earth?
Mining be it for gold, bauxite etc is not good for the Earth since it causes scarring of landscapes destroying God's natural creation eg. when trees and vegetation are removed. Also mining can cause mass movement and underground activities such as plate movement or earthquakes to occur.
Is gold surface or underground mining?
It can be both. Right now, the largest gold mine in Australia is an open pit mine. However, The Homestake mine in South Dakota was 8000 ft deep- an underground mine with 375 miles of passageways. It all depends on where the gold is located.
What impact does Iron Ore have on your environment?
Iron ore mining can have various negative environmental impacts, such as deforestation, habitat destruction, soil erosion, and water pollution due to the release of heavy metals and other contaminants. It can also contribute to air pollution through dust emissions and greenhouse gas emissions from transportation and processing. Sustainable mining practices, such as reclamation of mined areas and using cleaner technologies, can help mitigate these impacts.
What does a gold mine look like?
Depends entirely on what TYPE of mine it is. Some are open pit mines- they may look like a very deep crater with spiral lines (the haul roads for trucks) going to the bottom. But an underground mine may look like nothing but an opening in the ground, with a conveyor and ventilation fans being above ground.
What type of mines are near hemet ca?
There are several types of mines near Hemet, CA, including sand and gravel mines, aggregate mines, and clay mines. Additionally, there are historical gold and silver mines in the surrounding area.
What is the major ore minerals mined at Broken Hill mine?
The major ore minerals mined at Broken Hill mine are galena (lead sulfide) and sphalerite (zinc sulfide). These minerals are rich in lead and zinc, making them valuable resources for production. Additionally, the ore at Broken Hill mine may also contain silver and other minerals as byproducts.
Are there any hazards in mining Uranium?
Uranium ore emits radon gas. The health effects of high exposure to radon is a particular problem in the mining of uranium; significant excess lung cancer deaths have been identified in epidemiological studies of uranium miners employed in the 1940s and 1950s
What earth material is Kevlar composed of?
Kevlar is composed of a synthetic fiber known as poly-paraphenylene terephthalamide. It is a type of aramid, which is a class of synthetic materials known for their exceptional strength and heat resistance.
What minerals are mined in Kimberley?
Kimberley is known for its diamond mines, including the famous Big Hole mine. Other minerals mined in the Kimberley area include copper, silver, lead, and zinc. The region has a rich mining history dating back to the late 19th century.
Why is it necessary to observe the rock layers of several different localities?
Observing rock layers in different localities helps geologists understand the regional geologic history, determine the relative ages of rock units, and identify any changes in deposition or geological events over a larger area. By studying multiple locations, geologists can create a more comprehensive picture of the Earth's past and the processes that have shaped it.