Further, a change detection technique is used to detect active, new, and closed surface coal mines in a region. Detected closed mines are further analysed to evaluate reclamation of that region.
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Device uses highfrequency electromagnetic waves to detect turned soil. Groundpenetrating radar was used on the grounds at the former Kamloops Indian Residential School and indicated that the ...
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Accurate numbers are more difficult to find in a global context, but some sources estimate that up to 12,000 miners die each year in mining accidents, mostly in coal mines.
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[28] used a Convolutional Support Vector Machine (CSVM) network to classify buried objects, shape type, and soil type in GPR B scan images. Liu et al. [29] used deep learning to process GPR data of concrete and achieved nondestructive detection and localization of steel bars in concrete. The abovementioned studies showed the feasibility and ...
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Keywords Coal Mine Index Surface Coal Mining Coal Dump Region Coal Quarry Region Morphology Opening Mine Water Body Single Class SVM Bare Soil Index Download conference paper PDF 1 Introduction Surface mining is a widely used excavation technique, even though it has different adversities in the environment, ecology, and society.
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A coal extraction machine that tears the coal from the face. Road Header. A piece of excavating equipment consisting of a boommounted cutting head, a loading device usually involving a conveyor, and a track to move the whole machine forward into the rock face. Rock Breaker. A machine to break large rocks into smaller pieces.
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Kjeldahl method. The Kjeldahl method or Kjeldahl digestion ( Danish pronunciation: [ˈkʰelˌtɛˀl]) in analytical chemistry is a method for the quantitative determination of nitrogen contained in organic substances plus the nitrogen contained in the inorganic compounds ammonia and ammonium (NH 3 /NH 4+ ). Without modification, other forms of ...
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With the aim of solving the problem of coal congestion caused by big coal blocks in underground mine scraper conveyors, in this paper we proposed the use of a YOLOBS (YOLOBig Size) algorithm to detect the abnormal phenomenon of coal blocks on scraper conveyors.
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API is proactively integrating modern technology and developing standards to advance safe and responsible natural gas and oil production in addition to complying with regulations as part of a shared goal of zero incidents and reduced emissions. This is illustrated by two recently published API standards related to leak detection in liquid pipelines intended to help operators reduce the risk of ...
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All of this data is analyzed by computer program algorithms, which in turn is analyzed by engineers or trained vibration analysts to determine the health of the machine and identify possible impending problems like looseness, unbalance, misalignment, lubrication issues and more. Vibration analysis can detect problems such as: Imbalance.
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Radiocarbon dating helped verify the authenticity of the Dead Sea scrolls.. Radiocarbon dating (also referred to as carbon dating or carbon14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.. The method was developed in the late 1940s at the University of Chicago by Willard Libby.
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In 2018, coal, coke, and breeze accounted for 6% of manufacturing energy consumption, of which 62% was used as fuel and 38% was used as feedstocks. Fuel oils (distillate and residual fuels) combined accounted for 3% of manufacturing energy use in 2018 with 92% used as a fuel. Biomass use is nearly all as a fuel and nearly all by the wood and ...
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New tests can detect tiny but toxic particles of coal ash in soil. Scientists at Duke University have developed a suite of four new tests that can be used to detect coal ash contamination in soil ...
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Background Land use/cover and management practices are widely known to influence soil organic matter (SOM) quality and quantity. The present study investigated the effect of different land use,, forests viz. mixed forest cover (MFC), Prosopis juliflora (Sw.) DCdominated forest cover (PFC), and cultivated sites viz. agriculture field (AF), vegetable field (VF), respectively, on soil ...
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The seven micronutrients boron, chlorine, copper, iron, manganese, molybdenum, and zinc are used in very low quantities for crop production ( Figure 2 ). Corn leaves showing zinc deficiency. Interveinal striping in center of leaf is surrounded by green borders/margins. Figure 1. Sources of the sixteen nutrients essential for crop ...
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The coal delivered from the mine that reports to the coal preparation plant is called runofmine, or ROM, coal. This is the raw material for the CPP, and consists of coal, rocks, middlings, minerals and contamination. Contamination is usually introduced by the mining process and may include machine parts, used consumables and parts of ground ...
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Subtle variations in the measured properties can be used to determine the abundance and composition of key minerals at Earth's surface. For example, specific spectral absorption features and ...
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Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries, and the industrial growth of that era in turn supported the largescale exploitation of coal deposits. Since the mid20th century, coal has yielded its place to petroleum and natural ...
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The main goal of the work was to determine whether a radarbased system could be used to detect coalrock interfaces in order to establish a suitable mining horizon within the coal seam.
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Strain Gauges Strain gauges are used to measure the stress and strain on various structures, such as the roof and walls of a coal mine. These sensors can detect small changes in the structure's deformation, which can indicate potential caveins or collapses.
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Second, the cutoffs used for our thermal scores to detect COVID19 and lung injury were optimized for this specific study cohort, and need to be adjusted in future multicenter trials with larger ...
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FS21 Advantages. Affordability: Five to ten times more affordable than any competing device. Ease of use: Installation takes 30 seconds and a single battery charge lasts a full year. Accuracy: Measures air temperature, air humidity, soil moisture (10, 20 and 30cm) and soil temperature (10, 20cm) Key Advantages. Farm21.
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Loss on ignition (LOI) is a test used in inorganic analytical chemistry and soil science, particularly in the analysis of minerals and the chemical makeup of soil. It consists of strongly heating a sample of the material at a specified temperature, allowing volatile substances to escape, until its mass ceases to may be done in air or in some other reactive or inert atmosphere.
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Prevention and control of coal spontaneous combustion are key to coal mining and storage. Existing technologies for the detection of coal spontaneous combustion have limitations, but coal spontaneous combustion creates some serious disasters in areas of the world where coal mining and/or storage exists. New technologies to detect coal spontaneous combustion are urgently needed to reduce the ...
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Duke University scientists have developed tests sensitive enough to detect and measure microscopic particles of coal ash in soil, even at concentrations so low and sizes so small that other tests ...
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Thermal infrared remote sensing technology is widely used for the identification of coal fire areas, peatland combustion, forest fire, etc. [10,11]. Typically, the first step of this technology to detect coal fires is to invert the surface temperature, and then certain rules are utilized to extract the thermal anomalies on the land surface.
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The geological transparency of working face is the premise and guarantee to realize the intelligent and accurate mining for coal large number of gas drainage holes, water exploration holes and other boreholes are constructed before and during coal mining. In this paper, the borehole radar (BHR) is used to detect the coal bedding interface in boreholes along the coal seam.
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Coal analyzer. Coal analyzers are bulk material analyzers used by coal producers, coal preparation plants, and coalfired power plants to determine coal quality in real time. Coal quality parameters of greatest interest include ash, moisture, sulfur, and energy density (also known as heat content ). Although most coal operations can obtain this ...
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Longwall Miner. Twenty percent to 30 percent of mined coal underground is from longwall mining. This is performed by a mechanical cutter that shears coal off from a panel on the seam. The panel being worked on may be up to 800 feet in width and 7,000 feet in length. Mined coal is deposited onto a conveyor that moves the coal to a collection area.
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The available nutrient status of the mulberry gardens in the districts of Tamil Nadu is analyzed and evaluated to find the status. In this work, the soil is classified based on the test report to a number of features with fertility indices for boron (B), organic carbon (OC), potassium (K), phosphorus (P), and available boron (B), along with the parameter soil reaction (pH). A total of 10 steps ...
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July 22, 2021 DURHAM, Scientists at Duke University have developed a suite of four new tests that can be used to detect coal ash contamination in soil with unprecedented sensitivity. The tests are specifically designed to analyze soil for the presence of fly ash particles so small other tests might miss them.
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In the search for new sources of oil and natural gas, energy companies are guided by evidence gleaned from huge arrays of data gathered by sending sound waves deep into the ground. At MIT's Computer Science and Artificial Intelligence Laboratory (CSAIL), experts in machine learning and computer vision are developing mathematical tools that ...
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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