Iran said Tuesday it believes the remaining workers trapped by an explosion at a coal mine in the country’s east have died, bringing the death toll in one of its worst industrial disasters to at least 49. A provincial emergency official, Mohammad Ali Akhoundi, gave the death toll in a report carried by Iranian state television from the mine in Tabas. Figures for the number of miners inside the mine at the time have fluctuated since a methane gas leak Saturday sparked an explosion at the coal mine in Tabas, about 540 kilometres (335 miles) southeast of the capital, Tehran. Around 70 people had …