The number of people treated for exposure to toxic smoke from a phosphorus fire in Ukraine more than tripled Wednesday from 20 to 69, officials said a day after a train loaded with the chemical derailed and caught fire. About half of those affected, including 19 children, were hospitalized following exposure to the smoke, emergency department spokesman Ihor Krol said. He said their lives were not in danger. Concentrations of phosphorus residue in the air over two of the affected region's 14 villages, Anhelivka and Lisove, remained 23 times higher than normal, the Nature Ministry said early Wednesday. Later in the day, however, the ministry said concentrations over the villages had decreased dramatically in a matter of hours and were within the range considered safe.