Reuters: China’s industry ministry is considering regulations to tighten pollution standards for rare earth producers, Xinhua news agency reported on Sunday, a move the country’s top firm said might further raise export prices. Yang Wanxi, a government adviser involved in preparing the new regulations, said a draft had been filed with the Ministry of Industry and Information, aiming to force producers to upgrade production techniques, Xinhua said. China, which accounts for 97 percent of global output…