Data Mining: Concepts and Techniques.ppt
Data Mining: Concepts and Techniques.ppt - Download as a PDF or view online for free ... knowledge discovery tasks Enable to use the database in different ways Require the development of numerous data mining …
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Data mining techniques unit 1 | PPT
It defines data mining as the process of discovering interesting patterns and knowledge from large amounts of data. The key steps involved are data cleaning, integration, selection, transformation, mining, evaluation, and presentation. Common data mining techniques include classification, clustering, association rule mining, and anomaly detection.
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Data Mining: Concepts and Techniques (3rd ed.)
8. 8 Incomplete (Missing) Data Data is not always available E.g., many tuples have no recorded value for several attributes, such as customer income in sales data Missing data may be due to equipment malfunction inconsistent with other recorded data and thus deleted data not entered due to misunderstanding certain data may not be considered important at the time of …
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The mineral reserves & reserves estimation using triangular methods | PPT
13. Now, ore volume calculation: • Ore volume = area of the ore body * average thickness • For, first case, t(ave)=4 m, so, ore volume = 80000*4 =320000 m3 • For, second case, using length of the ore body and grade, ave thickness = 0.503 So, for this ore volume = 80000*.503 =40240 m3 • For third case, weight age ave thickness, tw =50.77 m then, ore …
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Offshore mining | PPT
Techniques for mining minerals in the marine environment may involve seafloor suction dredging, seafloor slurry pipes, use of tracked vessels on the seafloor and seafloor cutting/fragmentation. ... • Mineral sands (Ti-Zr) • Gold • Tin • Diamonds • Iron sands Mesopelagic Zone (200 m – 1 000 m) • Phosphates • Cobalt rich crusts ...
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Ocean mining techniques | PPT
The document discusses techniques for mining minerals from the ocean. It begins by noting the increasing global demand for minerals and depletion of land-based resources. It then describes types of minerals found in oceans, including volcanogenic massive sulfide deposits containing metals like copper, zinc and gold.
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Mining | PPT
5. PRE HISTORICAL MINING Since the beginning of civilization,people have used stones,ceramics for making tools and weapons. in ancient egypt malachite and maadi where excavated for …
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Gold | PPT
Gold is a bright yellow, soft metal that occurs naturally in rocks and alluvial deposits. It is mined through both placer mining, where gold is extracted from loose sediment, and hard rock mining, where gold is encased in rock. Hard rock mining techniques include both open-pit and underground mining.
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Mining Methods | PPT
Underground mining methods discussed include continuous miners, longwall mining, and road headers. New concepts being implemented in India such as highwall mining, punch longwall mining, and longwall top coal caving are also summarized. The document provides diagrams and descriptions of the equipment used for different mining methods. Read …
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Different Types Of Gold Mining | PPT
This document describes gold mining techniques from the past. Miners would extract rocks and materials from deep underground using horses or mules, and later use powerful water cannons to break rocks off cliffs and wash gold-containing material downstream. Individual miners would then spend time panning for gold by swirling water, rocks, and ...
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Methods of Gold Mining
Placer mining is the technique by which gold that has accumulated in a placer deposit is extracted. Placer deposits are composed of relatively loose material that makes tunneling difficult, and so most means of extracting it involve the use of water or dredging. There are a variety of placer mining methods, but the most common ones include:
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GOLD MINING TECHNIQUES
The cradle was one of the most successful mining method of the gold ... There were many clues to finding gold such as galena, lead sulphide, mundie and sulphur. ... – A free PowerPoint PPT …
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en/115/early mining techniques gold ppt.md at main
Contribute to dinglei2022/en development by creating an account on GitHub.
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What is Mining? | PPT
• Download as PPT, PDF ... or strip mining techniques. Subsurface mining involves digging shafts and tunnels underground to reach deep mineral deposits. ... removed. There are 3 types of surface mines: 1. Open-pit: removes large, near surface deposits of minerals such as gold and copper. Mined downward in layers 2. Quarries: stone, crushed ...
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Elusive Gold: Gold Mining Methods.
Each new mining device attempted to get the gold faster and more effectively. Abandoned tunnels, rusted mining equipment, piles of gravel and exposed rock remain today as evidence of the miners' rush to find gold. Some of the mining towns that supplied the miners remain …
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Elusive Gold: Gold Mining Methods.
Characteristics of Gold Rare, soft metal found in nature Easily melted or hammered into new shapes Prized for thousands of years, gold is a rare soft metal found in nature. Because it is soft, it is easier to work with than other metals. Gold can be hammered into really thin sheets or made into fine thread. When heated to 1943 F, gold melts into a liquid, which can be poured into …
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(PPT) Mining's Environmental Impact and Mitigation
Preface mental effects of mining activities. For instance, the environmental effects of the uncontrolled and intensive development of gold mining activities in the Brazilian Amazon during the past 15 years have shown to have global significance (Lacerda and Salomons 1997 Mercury from gold and silver mining: a chemical time bomb? Springer-Verlag).
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Mining of gold in south africa | PPT
UNDERGROUND MINING (SHAFT MINING) Mining technique used when gold deposits are very deep and difficult to reach. It involves drilling a section where there might be gold ore, i.e., the main mine shaft is built vertically downwards and then the side tunnels are built horizontally from the main shaft so that the gold reef can be reached. 7.
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PPT
Gold Mining. Gold Mining . Monica, Alicia, & Jon. Techniques . Placer Mining Panning Sifting through to try and find the denser gold Sluicing Uses a sluice box ( panning in great quantities) Dredging Largest scale of placer mining Hard Rock Mining Underground mining Byproduct Mining. 409 views • 7 slides
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Top 10 Gold Mine PowerPoint Presentation …
Explore our fully editable and customizable PowerPoint presentation on Gold Mine, designed to provide insightful information and engaging visuals for your next project or meeting.
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Top 10 Gold Mining PowerPoint Presentation …
Once a viable site is found, various methods such as open-pit mining or underground mining are employed to extract the gold-bearing ore. In the context of presentations, using a PowerPoint (PPT) template tailored for gold mining …
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PPT
Michelle Castaneda Gold Mining in Ghana. Photo Credits to Allan Lissner • A recent research conducted by Commission on Human Rights and Administrative Justice in Ghana reveals evidence of awful human rights abuses in mining communities, ranging from widespread pollution of water sources, deprivation and loss of livelihoods.. Photo Credits to Dr. Petra …
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Extraction of Gold
Gold ore processing •Zinc dust is then added to the cyanide solution to chemically reduce the gold to the metal. 2Au(CN) 2 + Zn 2Au+ Zn(CN) 4 •The metallic gold is then filtered out & refined. Smelting of resultant powder (rich Au) into steel molds and the slug is remove from the top furnace. Electrolysis is done to get high gold grade 99.999%
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01 Data Mining: Concepts and Techniques, 2nd ed. | PPT
Major Issues in Data Mining Mining methodology Mining different kinds of knowledge from diverse data types, e.g., bio, stream, Web Performance: efficiency, effectiveness, and scalability Pattern evaluation: the interestingness problem Incorporation of background knowledge Handling noise and incomplete data Parallel, distributed and incremental ...
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Free Gold Mining Google Slides And PowerPoint …
You can download free Gold Mining google slides theme and powerpoint template presentation on Pngtree. With these editable Gold Mining slides, you can directly use them in your presentation. We provide pptx file download or online edit.
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Basic Gold Prospecting & Exploration Methods
Surface seismic techniques used in gold exploration are restricted to seismic refraction and seismic reflection methods. Probably, the first one is the most employed. ... For these reason some polymetallic deposits contains important amounts of gold. When we have to talk about gold mining, everybody thinks on free gold. This idea started at the ...
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Mineral exploration | PPT
Mineral exploration is the process of finding ore deposits to mine through organized prospecting. ... uses physical methods to measure the surface properties of the Earth. Examples include geodesy, magnetic and electrical techniques. 5. ... Two computer generated views of Agnico eagle's Suurinkuusiku gold mining project showing both surface ...
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Gold Mining PowerPoint Templates & Google …
A PowerPoint template is a pattern or blueprint for your slides that you save as a .pptx or .potx file. All the Gold Mining PowerPoint templates are natively built in PowerPoint, using placeholders on the slide master, color palettes, and other …
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Gold rush mine | PPT
Gold rush mine - Download as a PDF or view online for free ... • Download as PPT, PDF ... - Miners used simple techniques like panning in rivers and streams or more advanced methods like rocking cradles to extract millions of dollars worth of gold from California's soils and waterways between 1848 and 1856.
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Top 10 Gold Mining PowerPoint Presentation …
For instance, mining companies can showcase their exploration results, mining techniques, and environmental impact assessments through visually engaging slides. Additionally, stakeholders can use PPTs to discuss market trends, …
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