Children play at a pumice mine in Masaya city
Children play at a pumice mine in Masaya city, some 37 km (23 miles) south of Managua, December 14, 2007. The pumice rock is later sold to a factory or industrial park in Managua. A pumice miner earns the equivalent of $2 or $3 per day. REUTERS/Oswaldo Rivas (NICARAGUA)