What are the advantages and disadvantages of surface mining. It is cheaper to extract the ore or metal than underground mining; Less chance of workers dying … What disadvantages or advantages are there for mining sand? »More detailed
A discussion of Underground Mining also loses much of its value unless costs are considered, because the expectation of profit is the only excuse for carrying on mining at all. ... Types of Underground Mining Method Comparison. View Larger Image; Table of Contents. Factors Affecting Choice of Method ... Advantages: The cost of mining is low ...
There are many advantages as well as disadvantages to both methods, including financial and environmental reasoning. You decide which is best for you. Underground mining. Underground or "deep" mining consist mostly of two methods - room-and-pillar and longwall mining.
Coal Mining Methods Underground Mining Longwall & Room and Pillar Mining Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground, with room-and-pillar being the traditional method in the United States. Both methods are well suited to extracting the relatively flat coalbeds (or coal seams) typical of
There are several different ways to mine underground. You can build spiral tunnels that circle the deposit, sink vertical shafts adjacent to the ore, or create adits, which are horizontal excavations into the side of a hill or mountain. Unlike open pit, underground mining requires that you take into account a wide variety of added requirements ...
Stoping is the process of extracting the desired ore or other mineral from an underground mine, leaving behind an open space known as a stope. Stoping is used when the country rock is sufficiently strong not to collapse into the stope, although in most cases artificial support is also provided.
Aug 01, 2007· Best Answer: Advantages of underground mining: (1) Less loss of land (2) Minimum dust pollution (3) Minimum noise pollution (4) Lack of near-surface deposits may make underground mining the only method. (5) Unfavorable geologic structure may require that a surface mine move underground to follow a particular bed.
Advantages of surface mining include economic and financial benefits for miners and communities and a safer alternative to pit mining, but its disadvantages include environmental impacts, such as erosion and contamination.
Underground Mining. Underground mining has the potential for tunnel collapses and land subsidence (Betournay, 2011). It involves large-scale movements of waste rock and vegetation, similar to open pit mining. Additionally, like most traditional forms of mining, underground mining can release toxic compounds into the air and water.
Mining - Underground mining: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered.
In any discussion of Methods of Underground Mining Comparison, one is repeatedly confronted with the difficulty of dealing with so many variable conditions. It is not an exact science and in the choice of a method each varying factor has a certain weight, which, in many cases, experience alone can determine.
In underground mining, the threat of a cave-in or release of toxic gas is a constant concern. When shaft mining was the most common method of ore extraction, thousands died in cave-ins, gas events and accidents involving equipment. In 1907 alone, more than 3,200 deaths related to mining occurred. ... The Advantages of Open Pit Mining.
Oct 21, 2017· A comparison between open cut and underground mining. Bend-tech prides itself on industry knowledge and thought leadership. ... Open Cut or Underground Mining – Which is better? October 21, ... The process keeps the activity from going deep underground. This has many advantages. Yet, it's only viable when the materials are reachable after ...
Apr 27, 2015· Underground mining is often utilized by mining firms to extract more ore and minerals. Higher production volume mitigates the costs spent on initiating the very expensive method of underground mining. This is how underground mining becomes a cost-efficient strategy.
Mar 14, 2013· Varieties of continuous mining machines have been in use since the 1940's. Advantages are it produces the lowest cost per ton a customer. Continuous mining accounts for about 45% of the underground mining. Disadvantages are not a lot of roof support. It's slowly become one of the more efficient way to mine. 5: Longwall Mining.
What Are the Advantages and Disadvantages of Mining? Mining gives people a portion of the resources needed for modern civilization, but it can also lead to environmental harm. While some are in favor of mining due to the resources it produces and the jobs it provides in the U.S., some are opposed to mining based on opposition to destructive ...
Sep 08, 2015· Underground mining also requires a different type of worker than a surface operation, and it can be difficult to find and maintain experienced operators and mechanics. According to Paul Smith, international marketing manager for the Astec Aggregate & Mining Group, despite of its challenges, an underground aggregate mine affords benefits that ...
Nov 20, 2018· In this video we talk about types of mining method and advantages and disadvantages of them. Do subscribe my channel if you think we are doing a great job. Like, comment and share our video as ...
Feb 13, 2016· So, in these cases underground mining is more cost effective. The downside is that human health and safety are at greater risk from mine cave-ins, flooding from groundwater or sea water, methane explosions in coal mines, or failure of air ventilation equipment.
Jun 09, 2017· List of major aspects below: In a nutshell, although it is an undeniable fact that mining affects our world enormously, we ought not to demonize its practice while its benefits are constantly enjoyed by the large majority of people. PROS: I. Economic incomes. enormous earnings by exportation, private contracts II. Job offers/opportunities for locals.