At least 11 illegal miners in northern Mozambique’s Montepuez ruby mine have died following a series of tunnel collapses over three days. The mine is 75% owned by the UK-based natural resources firm Gemfields. Despite repeated warnings from MRM staff, these illegal miners were seeking ruby-bearing gems and began undercutting the outer edge of the mining pit. This led to several ground collapse incidents, killing 11 artisanal miners over three days. BBC cited Ministry of Mineral Resources and Energy general inspectorObete Matine as saying that the walls of one tunnel had first collapsed at the Montepuez site, killing ... (full story)