In this Wednesday, May 7, 2014 photo, an Iranian coal miner with his face smeared black from coal poses for a photograph at a mine near the city of Zirab 212 kilometers (132 miles) northeast of the capital Tehran, on a mountain in Mazandaran province, Iran. The workers who put in long hours in often dangerous conditions and make just $300 a month, little more than minimum wage. (Photo by Ebrahim Noroozi/AP Photo)
