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Ghana study warns about hazardous levels of toxins linked to mining, as artisanal output soars

Ghana study warns about hazardous levels of toxins linked to mining, as artisanal output soars

According to a study backed by the government, an increase in artisanal mining of gold in Ghana has led to mercury contamination in host communities reaching dangerous levels. In some areas, soil readings reached 134 times what is considered safe.

The report, by New York's environmental group Pure Earth, and Ghana's Environmental Protection Authority, is based upon a year's worth of samples collected from soil, water and crops in six of Ghana’s 13 mining areas. The rapid growth of the artisanal gold mining sector, which is poorly regulated and includes small-scale miners, has been attributed to the soaring bullion price. This has raised concerns over potential health effects. In the first eight-months of 2018, the sector exported 66.7 tons worth $6.3 billion. This compares to 53.8 tons of gold for 2024. Ghana has tried to separate illegal mining from fully regulated activity. However, gold flows are often mixed, which blurs the lines and complicates enforcement.

The World Health Organization has set a safety threshold of 10 parts per million for mercury in soil. Researchers found that the average level of mercury in soil at Konongo Zongo was 56.4 ppm. This is far higher than the World Health Organization's recommended value. The peak readings were 1,342 parts per million (ppm) during the research period.

"CUMULATIVE EXPOSURE IS A SERIOUS HAZARD TO HEALTH"

The report stated that in addition to mercury contamination arsenic levels had reached 10,060ppm. This is more than 4,000% higher than WHO guidelines.

According to the WHO, high levels of arsenic can cause kidney failure, skin damage, and lung cancer. It also increases the risk for bladder and skin tumors.

The report was released on Saturday to the public and environmentalists at a meeting held in Accra, Ghana.

Anthony Enimil of Ghana's Pediatric Society (a child health lobbying group) said that the consequences could be evident in some communities.

Enimil stated on Monday that "we're seeing more and more children with kidney problems from mining areas - some of them are now on dialysis." "X-rays reveal mercury pellets inside their bodies, after an accidental ingestion."

A Ghanaian government spokesperson didn't respond to a comment request immediately.

Godwin Armah said the Ghana National Association of Small-Scale Miners' General Secretary would take some time to tackle mercury pollution caused by artisanal mining.

We have now switched to a safer alternative, the Gold Kacha Concentrator (concentrator), and banned the use mercury for gold amalgamation. "We are also increasing our efforts to raise awareness," he added, referring to the simple device that artisanal gold miners use to separate their gold.

According to Accra-based environmentalists, including lobby group A Rocha Ghana, toxic pollution is widespread across all 13 mining areas, due primarily to unregulated, small-scale gold-mining.

Ghana's President John Dramani Mahama promised to crack down on illegal mining. He also established the Ghana Gold Board, which will oversee the sector. However, critics claim that progress has been slow and Ghanaians are protesting against the illegal mining. Maxwell Akalaare Adombila (Reporting) Editing by Robbie Corey Boulet and David Goodman

(source: Reuters)