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Environmental Aspects of Phosphate and Potash Mining United ...

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The <strong>Environmental</strong> Approach <strong>of</strong> the <strong>Phosphate</strong> Rock <strong>and</strong> <strong>Potash</strong> <strong>Mining</strong> Industry<br />

Revegetation <strong>of</strong> Magnetite Tailings<br />

In Brazil <strong>and</strong> South Africa, magnetite tailings generated<br />

during the beneficiation <strong>of</strong> phosphate rock have been<br />

rehabilitated by covering with a suitable growing<br />

medium <strong>and</strong> revegetating with grasses <strong>and</strong> trees.<br />

The magnetite tailings present a potentially valuable<br />

future resource <strong>of</strong> iron.<br />

Vegetated magnetite tailings - Copebras S.A., Brazil<br />

Revegetation <strong>of</strong> magnetite tailings - Foskor Ltd, South Africa<br />

Large Scale Tree Plantations<br />

42<br />

during 2000, with plans to increase this to around<br />

300,000 per year. Seedlings are transplanted to areas<br />

surrounding the mining <strong>and</strong> beneficiation operations<br />

<strong>and</strong> the overburden spoil piles. Regular watering in this<br />

arid environment is needed during the first year to<br />

ensure rooting.<br />

The tree-planting program has been implemented at<br />

the OCP Benguerir <strong>and</strong> Youss<strong>of</strong>ia operations in a similar<br />

manner. Benefits, apart from visual aesthetics, include<br />

the creation <strong>of</strong> a wood <strong>and</strong> animal feed source in an<br />

area largely devoid <strong>of</strong> trees as well as a potential future<br />

food <strong>and</strong> cash resource from olive, carob <strong>and</strong> citrus production.<br />

Since the program was initiated there have<br />

been observable positive changes in the local microclimate<br />

<strong>and</strong> increased sightings <strong>of</strong> fauna species, formerly<br />

rare to the areas, in the new habitat.<br />

Nursery - Office Chérifien des <strong>Phosphate</strong>s, Morocco<br />

The Office Chérifien des <strong>Phosphate</strong>s (OCP) Khouribga<br />

mining <strong>and</strong> beneficiation operation in Morocco uses<br />

opencast dragline methods to extract ore from below<br />

20 to 30 metres <strong>of</strong> overburden. In 1995 an extensive<br />

tree planting program in mined l<strong>and</strong>s <strong>and</strong> surrounding<br />

areas began.<br />

Around 150,000 trees <strong>of</strong> various species were planted<br />

Tree plantation adjacent to mine - Office Chérifien des<br />

<strong>Phosphate</strong>s, Morocco

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