By Siyabonga Sishi and Nellie Peyton STILFONTEIN, South Africa (Reuters) - South African rescuers were making final efforts on Thursday to ascertain whether anyone was left in an illegal gold mine deep underground where at least 78 people died during a police siege,

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.