A flowers wreath is put by a highway to mourn for the victims of the fertilizer plant explosion near West, Texas, the United States, April 22, 2013. (Xinhua/Wang Lei)
Flowers and clothes of firemen are laid to mourn for the firemen died in the fertilizer plant explosion, outside a fire station in West, Texas, the United States, April 22, 2013. (Xinhua/Wang Lei)
Flowers are tied on a fire vehicle to mourn for the firemen died in the fertilizer plant explosion, outside a fire station in West, Texas, the United States, April 22, 2013. (Xinhua/Wang Lei)
Banner of "We are West" is seen in a school in West, Texas, the United States, April 22, 2013. (Xinhua/Wang Lei)
A word "thank" made up of paper cups is seen in a school in West, Texas, the United States, April 22, 2013. (Xinhua/Wang Lei)