The National Union of Mineworkers (NUM), a major trade union representing the 70,000 construction workers currently striking at 2010 World Cup stadium building sites in South Africa, will meet with local organizers on Tuesday in a bid thrash out a resolution. The disgruntled labor force have been demanding a 13 percent pay rise from their employers before they return to work, resulting in a dispute that could threaten the completion of key arenas in time for next year’s event.