What Is Contour Strip Mining

What Is Contour Strip Mining?

Contour mining is a version of strip mining that follows the contours of outcrops and hilly terrains. Usually the mineral seam follows the contour of the outcrop and the overburden is removed carefully along the seam in much smaller and custom shaped excavations rather than long strips.

What does contour strip mining extract?

strip mining removal of soil and rock (overburden) above a layer or seam (particularly coal) followed by the removal of the exposed mineral. … Contour mining progresses in a narrow zone following the outcrop of a mineral seam in mountainous terrain.

What is contouring in mining?

A type of strip mining in hilly areas where the mineral is exposed at the surface at roughly the same height along the hillside. It involves removing the overburden from the mineral seam starting at the outcrop and proceeding around the hillside so the cut appears as a contour line.

What is contour mining used to mine for?

Contour mining allows for the extraction of coal from mountainous areas where it is not feasible to extract the entire seam using mountain top removal mining. Contour mining allows for the partial removal of the coal seam at the elevation of the coal seam.

How does contour mining work?

Contour mining involves removing the overburden above the mineral seam near an outcrop in hilly terrain where the mineral outcrop usually follows the contour of the land. Contour stripping is often followed by auger mining into the hillside to remove more of the mineral.

What does strip mining do in Minecraft?

Strip mining is when you make huge holes and stuff on the surface to get ores instead of organized tunnels. You don’t actually get as much ore but you get a lot of cobble and a very hazardous hole.

What does underground mining mine?

Australia’s large and diverse local underground mining industry produces a significant proportion of its coal gold nickel copper zinc lead tin uranium and diamond exports.

What type of mining is contour strip mining?

Contour mining is a version of strip mining that follows the contours of outcrops and hilly terrains. Usually the mineral seam follows the contour of the outcrop and the overburden is removed carefully along the seam in much smaller and custom shaped excavations rather than long strips.

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What is the environmental impact of contour strip mining?

Surface mining (another name for “strip mining”) can severely erode the soil or reduce its fertility pollute waters or drain underground water reserves scar or altar the landscape damage roads homes and other structures and destroy wildlife.

What are tailing piles?

Tailings are a type of rock waste from the mining industry. When a mineral product is mined the valuable portion is usually embedded in a rock matrix called ore. Once the ore has been stripped of its valuable minerals sometimes through the addition of chemicals it is piled up into tailings.

Where is area strip mining used?

Strip mining is employed in coal reserves where the overburden is removed in rectangular blocks in plan view called pits or strips. The pits are parallel and adjacent to each other. Strip mining is fundamentally different from contour or area mining on how the overburden is displaced called spoil handling.

How long does strip mining take?

They start strip mining in a highly efficient fashion or simply dig a 2×1 tunnel straight foward (Herobrine tunnel) until they spot diamond ore. The total time it takes to do that would be about 2 to 5 minutes.

Is strip mining bad Minecraft?

Because it gives you a better chance of finding valuable ores and by strip mining you also avoid mobs which means it’s less likely for you to take pve damage. Basically we want you to cave not strip mine for valuable ores such as gold or diamonds.

How efficient is strip mining?

A maximum efficiency is reached at a spacing of around 6 blocks (that is 6 solid blocks left in-between the tunnels). At this spacing efficiency is about 0.017 corresponding to 1.7% of blocks removed being a diamond.

How deep can you dig in Minecraft?

What’s all this about ‘layers’? The Minecraft world is 128 blocks high from the bedrock at the bottom to the highest position you’re allowed to place blocks.

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What are 4 types of mining?

There are 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.

How long do miners stay underground?

Miners usually work shifts and they can be on for 10 days in a row. Some head down before sunrise and return anywhere from seven to 12 hours later.

What are the steps of strip mining?

Strip mining is the process of removing a thin strip of overburden (earth or soil) above a desired deposit dumping the removed overburden behind the deposit extracting the desired deposit creating a second parallel strip in the same manner and depositing the waste materials from that second (new) strip onto the

What are the 3 types of mining?

surface mining method of extracting minerals near the surface of the Earth. The three most common types of surface mining are open-pit mining strip mining and quarrying. See also mining and coal mining. This article was most recently revised and updated by Amy Tikkanen.

What is the difference between open pit mining and strip mining?

Strip mining is a practical type of mining when the ore body that is to be extracted is near the surface. Open-pit mining is the process of extracting rock or minerals from the earth through their removal from an open pit or borrow.

What is deposition mine tailing?

6.5 Tailings Impoundments. Mine tailings are the finely ground residue from ore extraction. … The method of deposition affects the distribution of tailings particles within the impoundment.

What is tailing dam failure?

Tailings dams are made up of mining residue deposits and they represent a high risk in terms of mechanical instability. In the event of collapse the tailings in such dams may be released and flow over long distances with the potential risk of extensive damage to property and life.

What tailing means?

1 : residue separated in the preparation of various products (such as grain or ores) —usually used in plural. 2 : the part of a projecting stone or brick inserted in a wall.

What is wrong with strip mining?

Strip mining presents many different problems including the destruction of ecosystems through removal of vegetation and dumping into streams (such as in mountaintop removal mining) problems with blasting damage and noise pollution flooding the extreme hazards presented by the impoundment of wastes generated from …

Does strip mining still exist?

Mountaintop removal coal mining often described as “strip mining on steroids ” is an extremely destructive form of mining that is devastating Appalachia. In the past few decades over 2 000 miles of streams and headwaters that provide drinking water for millions of Americans have been permanently buried and destroyed.

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What machines are used in strip mining?

Complex Surface Mining Equipment
Complex surface mining equipment is used directly or as support in the mineral extraction process:
Draglines Shovels Loaders Haul Trucks Highwall Miner Blasthole Drills Dozers Graders

What level should you strip mine?

Minecraft’s New Best Level To Strip Mine For Diamonds

While Y-level 12 was the optimal level for strip mining that level has now been lowered to Y-level -35.

What is the best mining technique in Minecraft?

Branch mining is the most efficient. There’s a mathematical analysis on it in the official forums (the link is to an archive of the post). Here’s a brief description of branch mining: You dig down to the bedrock because that’s where you’re going to find the most different kinds of stuff.

How do you mine super fast in Minecraft?

Can you use TNT to mine diamonds?

Assuming the same laws of TNT in the PC/Mac game apply to the Pocket edition then yes you can! However there are two things to keep in mind: 75% of the diamonds will be instantly “vaporized” in the explosion instead of dropped as items. You cannot use a Fortune enchantment when using TNT.

How rare are abandoned mineshafts in Minecraft?

Abandoned mineshafts are not very rare in Minecraft. The only problem is that these structures generate deep underground in caves.

What is the best strip mining technique?

The most basic strategy is to mine in a straight line at a 45° angle downwards moving one block across for every block down. If the player dig out four blocks above each step instead of three climbing back up is easier since they won’t “hit their head” with each jump up the steps.

Which biome has most diamonds?

Well according to Minecraft Feedback diamonds are more common in desert savannah and mesa biomes. Diamond ores are more common in Mesa savanna and dessert biomes to have the best luck finding them try to find a ravine or cave that goes under Y axis 12 since that is the most common area to find diamonds.

How do you find y11 in Minecraft?

  1. Find a big lava lake in a cave. During world generation every air block at y=10 and lower gets replaced by lava so when you stand on the shore of such a lava lake you are at y=11.
  2. Find the highest bedrock layer (at y=3) and count up 8 blocks.

Contour Mining

Surface Mining – 1.1 Introduction

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SURFACE MINING| Surface Mining Methods| Open Pit open cast strip mining Quarrying Auger mining

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