IndustriALL Global Union is calling on the government of Iran to immediately release 28 workers arrested on 26 January.... [W]orkers from Khatton Abad Copper Mines [part of National Iranian Copper Industries], were seized after taking part in a peaceful demonstration demanding the reinstatement of 170 contract workers who had been promised permanent positions...Many Khatoon Abad workers have been on temporary contracts for several years and their efforts to achieve better job security and wages have led to minimal results. Workers in Iran are particularly vulnerable to attack as trade unions are outlawed in the country.