LUSAKA. – Zambia’s mining minister Richard Musukwa announced an investigation on Thursday after 10 people died during the collapse of a mine dump in the country’s copper-producing region. The subsistence miners were killed on Wednesday when the dump known locally as Black Mountain collapsed in Zambia’s second-largest city and mining hub Kitwe.

Musukwa told parliament “the investigations are still underway and we have suspended operations at the Black Mountain to allow for a forensic investigation”. Musukwa blamed the incident, which also left seven people injured, on “people who should not have been in the mine”, describing them as “illegal miners or scavengers”.

Local media reported that ministers were forced to step in last month after small-scale miners at the site began using explosives to extract copper from the mine dump, damaging nearby properties and possibly dislodging the mound. Zambia has some of the world’s largest copper reserves and the metal accounts for as much as 80 percent of the country’s export earnings.