impacts are soil-erosion, loss of topsoil, creation of waste dumps and voids, disposal of wastes, deforestation etc. The impacts of iron ore mining on land are as outlined hereunder; (a) Topography and land scenario changes due to excavation of open pits and dumping of overburden rock mass in the form of land heaps.

Goan (India) iron ore has a relatively high overburden to ore ratio (of an average of about 2.5 to 3:1) and thus generates a large quantity of waste material. Since the size of mining leases are small, mining companies often acquire land outside their lease area to dump waste material.(ISID, 2012) Lands being in short supply, waste dumps are ...

Mine tailings expose the earth crust to environmental contamination necessitating to fix the metal and metalloid contaminants in the over burden soil, and rehabilitation of spoil dumps. The use of plants to stabilize and inactivate the potentially toxic compounds in such soil could be an effective low cost green technology. However, …

Slips of vetiver plant were planted on the slopes of overburden dumps at different experimental plots and monitored on a regular basis. These vetiver plants …

The chromite ore overburden sample designated as COB-4 was used in the remediation study which was dumped for more than 10 years. The effect of temperature (25–40 °C) on the reduction of Cr(VI) in the COB was examined while varying the constituents of LB medium (tryptone, yeast extract, NaCl and sucrose/glucose) and pulp …

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Impact of tree plantation at iron ore mined spoils was studied in central India including analysis of pH, electric conductivi organic matter, available N, P, K exchangeable Mg, Ca and trace elements.

Vetiver Grass Environmental Model for Rehabilitation of Iron Overburden Soil: An Ecosystem Service Approach. Mine tailings expose the earth crust to …

Contamination of soils may result from water discharge, runoff, seepage from tailings impoundments, pits and mine workings, as well as from the overburden, …

Open-pit mining: This involves digging a large open pit to access ore deposits. The process generates a substantial amount of overburden, which needs to be moved to expose the ore body. Strip mining: Commonly used for coal, strip mining involves stripping away large areas of soil and rock to access seams of coal. This method …

from Iron Ore Mines Overburden Soil Poonam Verma1, ... contaminated with Fe and Cu. Heavy metal concentration decreased with increase in the age of overburden (Table 1). In natural soil Ni, Pd, Zn ...

more contaminated by HM than paleosols; (4) the rate of penetration of HM into the depth of the soils (into paleosols) is reduced due to the properties of the overburden of PMM. …

Current concepts of soil transformation and contamination in iron ore mining areas have been reviewed. Changes of soils and ecosystems in the mining areas are among the largest-scale impacts of economic activity on the nature. Regularities in the radial differentiation, spatial distribution, and accumulation of heavy metals in soils of …

Abstract. This study was focused for the bioreduction of Cr(VI) from chromite mine overburden soil using a highly tolerant Bacillus sp. isolated from chromite mine soil.Under the optimized conditions of pH ~7.0, Bacillus sp. (4.05 x 10 7 cell mL-1) reduced more than 98% of Cr(VI) from the soil sample in 16 h at 60% pulp density(PD).The …

The exploitation requires the removal and disposal of about 50 million cubic metres (Mm 3) of overburden material during the 20-year quarry lifespan. Limestone deposit is covered by a 50–70 m thick layer of soil–clayey sand and clay–which has to be removed by means of excavators/shovels and chain bucket excavator.

The main objectives of this paper are to present the impact of former iron ore mining on the transformation of the soil cover and to demonstrate how these …

Abstract. Current concepts of soil transformation and contamination in iron ore mining areas have been reviewed. Changes of soils and ecosystems in the mining areas are among the largest-scale ...

2.2. Field layout and sampling. The study area was separated in three sites (Fig. 1 C): Site I) sandy sediment; Site II) iron ore tailing mud; and Site III) pasture soil (not contaminated).From the riverbank to the pasture soil, three sampling lines of 10 × 50 m (Fig. 1 C) were drawn on the soil (area of 1200 m 2).Samples were collected from 0 to 5 …

The review emphasizes the type of mines, overburden generation, their impact on soil and water, and the utility of different biowastes available to be mobilized into biochar for remediation of contaminated water and soil. It also bridges the gap in the current knowledge on the activation techniques of biochar with heavy metals remediation.

This study aims to evaluate the effects of the utilization of iron ore overburden (IOO) materials compared to aggregates (VA) on the characteristics of hot mix asphalt (HMA) considering Topeka and binder layers. Mechanical performances, environmental impacts, electrical sensitivity, and deicing efficiency of laboratory HMA …

The physico-chemical parameters and heavy metal content in iron ore mine-soil demonstrated that the concentration of Fe was highest, followed by Al, Cu, Zn, Cr, Mn and Ni. The overburden (OB) and tailings from iron ore mines located in the state of Jharkhand, in India revealed that the OB samples showed high concentration of Fe …

It is a big issue as most of the overburden materials (OBMs) are unsuitable for vegetation due to lack of true soil characteristics, and are generally contaminated with toxic heavy metals (TMs).

Soil pollution and heavy metals (HMs) contamination caused by the improper management of mine soil is a major concern for the environment and the associated living beings. The present study was carried out for 90 days with iron mine soil (MS) amendment with different ratios of garden soil (GS) (0, 25, 50, 75 and ).

1 PURPOSE AND OBJECTIVES. This Global Standard sets the minimum requirements for the management of waste rock and ore stockpiles to minimize adverse environmental and human health impacts, to promote beneficial post-mining land uses, and to reduce post mining closure and reclamation liability. This Standard addresses characterization of ore …

Fig. 3b shows the raw overburden soils and the corresponding aggregate manufactured from the soil. The color of the overburden soil varied with the proportion of the chemical oxides present in the soil, which is evident from the XRF results (Table 4.). The red and alluvial soil aggregates were orangish brown due to the presence of iron …

From the foregoing, it is evident that large quantities of iron-ore slimes are annually produced in India and the iron content of such waste streams varies between 52 and 62.8% Fe. Iron-ore tailings are also contaminated with parts per million levels of heavy metal ions such as Cu, Pb, Zn, Cr, Sn, Mo and U, as well as lower levels of ...

Introducing CDE's wet processing solutions can transform these by-products into valuable products helping to reduce stockpiling on site and prolong the life of mineral extraction sites. Utilising existing and previously disregarded materials delivers: Proven technology to maximise the quality and quantity of the extracted products. Extended ...

Impact of plantation on iron ore mined overburden at Durg in Chhattisgarh, India: Banerjee et al. (2016) Vetiver grass: An environment cleanup tool for heavy metal contaminated iron ore mine soil: Roongtanakiat et al. (2008) Effects of soil amendment on growth and heavy metals content in vetiver grown on iron ore tailings:

Emergency ponds. Below are some of the environmental problems of mining which leads to mine wastes; 3.1 Water Pollution. Exposed ore, overburden pile s, waste rock and ore piles, tailings i ...

High metal concentrations in the groundwater have been observed in other studies also from the iron ore mining areas worldwide. Considerable contamination of surface and groundwater with metals ...