Succession of Vegetation on Dumps from Strip Coal …

about 200 km2 of dumps. In future, their area will cover c. 400 km2. Some of this area is reclaimed but large dumps are left without any treatment after dumping. Thus a spontaneous succession can be followed there. The dumps from brown coal mining were considered a very suitable object for

Environment Impact Assessment of Coal Mining

 · underground mines in the earth crust. Coal mining is one of the most illegal activities going on in the country. At the same time it totally neglects the role of EIA in its pre-operational, during mining and post operational plans. Here various case studies of coal mining are done and the impact of coal mining to the environment is looked into with

Requirements for mine dumps & stockpiles - …

Until recently, mining waste was regulated under the Mineral and Petroleum Resources Development Act 28 of 2002 (MPRDA). With effect from 24 July 2015, the establishment and reclamation of mine dumps and stockpiles of similar …

Mineral Mining – HALALA COAL

Mineral Resources Mining. We have experience as a company and we have very experienced people in mining special coal, and chrome ore. We have been mining opencast and coal dump in Mpumalanga. We managed to mine the old Loskop colliery in Wakkerstroom and also the new opencast of Loskop colliery, mining over 15000tons of Anthracite; using drill ...

STUDY OF STABILITY OF OVERBURDEN DUMPS MIXED …

 · study of stability of overburden dumps mixed with flyash in an opencast coal mine a thesis submitted in partial fulfillment of the requirements for the degree of bachelor of technology in mining engineering by raj chakravarty 109mn0106 department of mining engineering national institute of technology rourkela – 769 008 2013

Mine Tailings Disposal Methods

 · The methods commonly employed for disposal of these wastes in each of the industry segments (that is, coal mining and metal-ore and non-metal mineral mining) are described below. Mining Coal Tailings Disposal. As has been pointed out earlier in this section, immense quantities of wastes are produced by coal mining activities.

INVESTIGATION AND DESIGN - British Columbia

 · Mine waste rock and overburden dumps are massive structures, for example, mountain top coal mines in British Columbia are constructing the largest man-made structures on the face of the earth. These immense waste dumps are often up to 400 meters high, designed to contain in excess of 1 billion

Stanford Dumps Coal - Columbia CaseWorks

 · In May 2014 Stanford University announced that it would no longer directly invest in coal mining companies. This case summarizes the objectives of the Fossil Free movement—both at Stanford and at other universities— that gave rise to this decision, and asks students to consider how this decision might impact the earnings of Stanford's ...

Coal Mining - an overview | ScienceDirect Topics

Coal mining activity has had a bad influence on the environment. Numerous coal dumps of different sizes and compositions contain rock waste resulting from the processes of coal exploitation and enrichment. Dump fires cause the emission of gases and dusts detrimental to health and the environment.

Environmental Consequences of a Burning Coal Mine : A …

 · Abstract: Coal mining has always been associated with various environmental consequences. Geo-environmental parameters such as air, water, soil, agricultural lands, vegetation, landforms are affected directly by coal mining activities. Coal fires are an ever-present problem in coal-mines, the world over.

COAL REFUSE - Environmental Resources Committee

 · mining activities." Where was and is coal refuse placed? Because it is a by-product of coal mining operations, coal refuse is located throughout the coal regions of Pennsylvania and other coal producing states. The coal regions in Pennsylvania are shown in …

IMPLEMENTATION OF REAL TIME GEOTECHNICAL …

 · 2.1.2. Mining History . Coal mining was initiated at the study site in 1969, and has been ongoing for 31 of the past 35 years, using both underground room and pillar and open pit truck and shovel operations. The surface operations began in 1972. The current operator has been mining on the property since 2004.

Dump failure and Stability: Lalmatiya Coal Mines Accident

It is an important characteristic for stability, mode and speed of failure, and potential runout distance. In general, dump height is predetermined by the mine site physiography and mining rate. Volume: Small dumps are considered to contain less than about 1 million m3, while large dumps have more than 50 million m3 .

General : Problem with post-mining era of coal dumps

 · Strongly burnt post-coal-mining dump. Hydrothermal veins found cutting the pyrometamorphic complex. The veins contain Ca carbonates (calcite, aragonite), silicates (e.g., gehlenite and tobermorite), and other Ca minerals like oldhamite and fluorite. In the mine, probably only calcite occurs in hydrothermal veins.

Succession of Soil Algae on Dumps from Strip Coal …

with the age of the dumps and finally reaches about 40 species from the 18th to 30th year. The species composition is similar to that in grassland biotopes in Czechoslovakia. INTRODUCTION The large dumps from surface brown coal mining near the town of Most (North Bohemia, Czechoslovakia) are suitable for studying plant colonization and succession

Experience in collecting heat at the ... - ScienceDirect

 · 1. INTRODUCTION The inception of thermal activity in mining dumps is associated with a massive release of heat energy. Its amount depends on the petrographic composition of rocks in the mining dump material, the content of coal substance and dispersed coal matter in the rocks, as well as the size of the mining dump itself and its shape.

Evaluation of the ecological restoration of a coal mine ...

 · As opencast coal mining is a temporary use of land, there is a need for the restoration of mine dumps after completion of mining activities. Vegetation on the mine dumps is beneficial to control the coal dust dispersion, soil erosion, sedimentation, and ultimately improve the soil quality (Mukhopadhyay et al., 2017).

RISK BASED EVALUATION OF MINE WASTE DUMPS

 · dumps commonly constructed at the coal mines of southeast and northeast British Columbia (Figure 1). During the 1980's major expansion of the coal mining industry in British Columbia resulted in the construction of some of the largest and highest mine waste dumps in the world (Photo 1).

Coal waste - Global Energy Monitor

 · Coal mining and coal combustion in power plants produce several types of wastes: The mining process itself produces waste coal or solid mining refuse, which is a mixture of coal and rock.; The mining process also produces liquid coal waste, which is then stored in impoundments.; Pollution control equipment used for coal combustion produces coal ash or fly …

How to Control Pollution in Mining Industry?

 · The total number of working mines reported in 1982 was 5510. Out of that 516 are coal mines and the remaining 4994 in the non-coal sector. The visual impact of mining on land is the aesthetic damage due to disfiguring of landscape. Opencast/Surface Mining Impacts:

Adverse effects of coal mine waste dumps on the ...

 · Coal mining generally produces very high volumes of waste. In underground coal mining, these waste dumps are often located in areas of shortest hauling distance from mine openings. These dumps are the active sources of environmental impacts that can endanger and/or threaten both ecological and social systems in a region.

Coal Mining and Combustion in the Coal Waste Dumps of ...

 · Coal mining in Poland is confined to three coal basins: the Upper Silesian Basin (USB) where coal exploitation has lasted for 250 years, the Lower Silesian Basin (LSB) around Nowa Ruda and Wałbrzych, and the Lublin Basin (LB). Poland is the biggest producer of hard coal in the European Union. The coal output in Poland is 100 million tons per year, which is more than …

A Coal Mine Dump Stability Analysis A Case Study

 · nal dumps have taken place in coal mines. It is necessary to study such cases and find out the cause of destabiliza-tion. 2. Destabilization of Internal Dumps . Failure of internal dumps is a complex problem. In addi-tion to environmental considerations, it directly affects the resource recovery, mine safety and mining cost.

Overburden Management for Formation of Internal …

overburden to coal ratio can reach 6 m³/t and the depth of the mines can be up to 300 m. The total amount of overburden removal is approximately 1 billion m³/a. To minimise the costs and the impact to the environment, the formation of inside dumps with high productive continuous mining technique is required.

KZN Coal Discards Programme - Fossil Fuel

 · Categories of coal discard dumps •Ownerless dumps with no allocated prospecting or mining permits •Ownerless dumps with allocated prospecting or mining permits •Dumps with uncertain or disputed ownership •Privately owned dumps ( closed mines) •Privately owned dumps (operating mines) •Dumps owned by SOEs e.g. Eskom

University of Wollongong Research Online

 · For high-value commodities such as coking-coal, economic depths in excess of 275 m are currently underway in Australian coal mines, with plans to progress to 350 m or more. This translates to mine spoil dumps potentially reaching heights of up to 450 m. Current experience-based understanding of mine

Thermall Processes at Old Mining Dumps and Their ...

 · old mining dumps. Index Terms — Mining dump, thermal process, temperature monitoring, heat collect, measurement I. INTRODUCTION URRENTLY, one of the negative consequences of mining coal is occurrence of extractive waste storage locations - mine dumps, many of which show presence of thermal processes. Their development is allowed due to a

OVERBURDEN DUMP SLOPE STABILITY: A CASE STUDY …

 · that dumps do not slide and causes any untoward incident/ accidents. Overburden dumps can be external dumps created at a site away from the coal bearing area or it can be internal-dumps created by in-pit dumping concurrent to the creation of voids by extraction of coal. Practice of dumping overburden in the external dumps has some serious problems.

In situ bioremediation of South African coal discard dumps

In situ bioremediation of South African coal discard dumps AK Cowan et al. 510 Mine Closure 2016, Perth, Australia (10.5%) and 2:3:2 (22%) + 0.5% Zn applied at rates of 30 kg/ha and 1 t/ha, respectively. Experimental blocks on Klippan and Greenside discard dumps and the respective mine standards were seeded using a mix of

An analysis of self-ignition of mine waste dumps in terms ...

 · Coal mine waste dumps are mostly composed of claystones, mudstones, sandstones, conglomerates, carbonates, carbonaceous shales, and pyrite-bearing carbonaceous rocks 7,8. The thermal activity of ...

Methodology for a dump design optimization in large …

 · massive mine dumps or, to a lesser extent, to the grinding mills. Mine dumps can be classified as leach or waste dumps, depending upon their economic viability to be pro-cessed in-place, a condition that has experienced great progress in the last decades and has reconfigured the open pit haulage network with an increase in the number of dumps.