South African President Cyril Ramaphosa is facing calls to order a national inquiry into a police operation that was meant to combat illegal mining but ended up leaving 87 miners to die underground as authorities attempted to force them to surrender during a monthslong standoff.

South African rescuers ended their attempts on Thursday to find anyone left in an illegal gold mine where at least 78 people died during a police siege, as a local volunteer described the horror of extracting their bodies from deep underground.

The clampdown on illegal mining cut off food and water to hundreds of miners underground. At least 78 bodies were pulled from a mining shaft this week, and more are believed to remain underground.