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  • Product: Coletanche ES2
  • Quantity: 133,000 m²
  • Objective: Environmental rehabilitation of a mine and former dam

AUGUST 2019: MINE WASTE COVER IN A TAILINGS POND AT CAPRICORN COPPER (AUSTRALIA)

Coletanche worked on the Capricorn Copper mine rehabilitation project to cover 100,000 m² of a tailings dam and 40,000m² of a mine waste pond (leachate).

The aim of this project WAS to address the environmental problems caused by mining and to give a second life to this area through revegetation.

The combination of the Coletanche geomembrane with a 1 m-thick cover of soil and crushed stone will provide waterproofing for up to ten centuries, according to Brett Fletcher, Capricorn Copper’s managing director (source).

Using a bituminous geomembrane on this type of site allows for innovation and avoids the alternative of a clay cover, which involves finding and moving nearly 100,000 tonnes of clay.

The advantage of using Coletanche on this project were:

  • Its resistance over time,
  • Its ease of installation, which makes it possible to work with local labour without using a specialised subcontractor. As Brett Fletcher stated, “We work with local contractors”.
  • Its cost: Coletanche was less expensive than a clay cover solution, which would have required more human and transport resources.
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