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For an open cut, the overburden has to be removed so that the ore can be accessed. An underground mine needs a tunnel to be dug through the host rock until you reach the ore. In both cases, there is usually waste rock which also has to be removed from the mine so your machines can get to the ore once you have reached the ore body.
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How was cast iron discovered?
Cast iron was discovered by accident during the Iron Age when iron ore was mixed with charcoal in a hot fire, resulting in the production of molten iron which could be cast into different shapes. This process was refined by various civilizations over time, leading to the widespread use of cast iron in tools and cookware.
Where is the oldest bell in Arkansas?
The oldest bell in Arkansas is a bronze bell in the Cowie Family Chapel of St. Ann of the Bells in Carbon City, Arkansas. It was cast in 1679, and says "John the Greek made me in 1679"
What moldboard made of cast iron had a central ridge ending in a sharp point that cut the soil and wings that pushed the soil off It was said to have begun the agriculture revolution when it came to?
The moldboard plow, made of cast iron, had a central ridge ending in a sharp point that cut through the soil, with wings that pushed the soil off to the sides. It is considered to have revolutionized agriculture by making it easier to cultivate larger areas of land more efficiently.
What was used before the steel plow?
Before the steel plow, farmers used wooden plows or tools made of iron. These plows were heavier and less effective at breaking up tough soil compared to the steel plow invented by John Deere in the 19th century.
How were the casts made of the bodies from Pompeii?
The bodies decomposing left a small cavity surrounding the remains. The ash hardened leaving a mold of the person containing just the bones. They located the cavity, drilled a small hole, filled the hole with plaster, then removed the plaster cast containing the bones from the ash.
Why does open cast mining leads to waste heaps on surface?
Open cast mining involves removing large amounts of soil and rock to reach mineral deposits. This process creates waste heaps on the surface because the extracted materials that do not contain valuable minerals are discarded as waste. These waste heaps can impact the environment by altering landscapes, contaminating air and water, and disturbing local ecosystems.
What is different deep mining and opencast mining?
rocks and minerals are easy to find and extract when they outcrop on or near the Earth's surface. All that needs to be done id to clear the vegetation and soil from the surface and start digging. Such mining is called open cast mining. deep mining involves sinking a vertical shaft down to the rock layer containing minerals, making a horizontal tunnel following the mineral layer, extracting the minerals by digging done by machines and miners, bringing the loose rock from the mine and piling it up on waste heaps on the surface and transporting the minerals. deep mining is more dangerous than open cast as miners work underground while in open cast workers work on the surface.
A mining process in which rock is stripped away to expose mineral deposits near the surface is?
Strip, surface or open cast mining.
What are the different types of mines?
THERE ARE DIFFERENT TYPES OF MINING SUCH AS SURFACE MINING,open cast mining, strip mining,alluvial mining,quarrying mining,underground mining,and drilling
What are two main types of mining and how do they differ?
What are two main types of mining and how do they differ? Open cast mining, and underground mining. The reason they differ, is because underground mining is where they create shafts that lead to ore beds. Open cast mining, is the opposite of underground mining. I really hope this answer is useful! I love to help people get better at science. I hope I helped you guys! Bye.
What are the two main types of mining and how do they differ?
The two main types of mining are surface mining and underground mining. Surface mining involves extracting minerals or resources from the Earth's surface, while underground mining involves extracting resources from beneath the Earth's surface. Surface mining is generally more cost-effective and less dangerous, but it can have a larger environmental impact compared to underground mining. Underground mining, on the other hand, can be more expensive and pose greater safety risks, but it is less disruptive to the environment.
What technologies are used in mining?
There are some technological methods that are used in mining are:Open-cast mining : Open-cast mining is done when a mineral is located very close to the surface. In the open-cast mining, different minerals are taken out by removing the surface layer. Open-cast mining is famous for coal mining in India and many other countries.Shaft mining : The word 'shaft' refers to deep bores. In the shaft mining, deep bores are created to reach mineral deposits. This is because, these deposits lie at great depths. Petroleum and natural gas are extracted by shaft mining.
What is the removal of the surface of and area to obtain the nonrenewable resources below?
strip mining Also known as open-cast mining (UK).
What type of mining can i use with an horizontal layer of coal close to the surface?
You can use surface mining methods such as open-pit mining and strip mining for a horizontal layer of coal close to the surface. These methods involve removing overburden to access the coal seam, making them suitable for shallow coal deposits.
What do you mean by opencast mining?
Opencast mining is a surface mining technique where minerals are extracted from the earth by removing the overlaying rock or soil. This method is used when deposits are close to the surface and involves the use of heavy machinery to extract the resources. It is also known as open-pit mining.
What is a mining method in which overlying rock material is stripped away to reveal mineral deposits is?
Surface mining is a method in which overlying rock material is stripped away to reveal mineral deposits. This type of mining is used when the mineral deposits are close to the surface, making it easier and more cost-effective to extract them. Examples of surface mining include open-pit mining and strip mining.
Which all minerals are extracted from open cast mining?
Open cast mining is commonly used to extract minerals such as coal, copper, iron, gold, and bauxite. It is a surface mining technique where the rock or minerals are extracted from the earth through an open pit.
