Glencore linked to acid waterfall in DR Congo

The chief executive of the mining giant Glencore, Ivan Glasenberg, says it is an ethical business.

Panorama's John Sweeney visited the company's copper refinery in the Democratic Republic of Congo to test that claim.

He found acid pouring into a river by the company's Luilu refinery.

Upstream, the river - used by local people to wash and fish - was clear and green; downstream of the Glencore pipe there was brown sludge.

Glencore say the pollution started long before the company took over the refinery and that the pollution has now ended.

Panorama: Billionaires Behaving Badly? is on BBC One, Monday 16 April at 20:30 BST. Watch online afterwards (UK only) at the above link.

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