Major chemical incidents over the last three years

After West, President Barack Obama issued an executive order to update chemical safety laws and stop accidents from happening. While that work moves slowly along, casualties continue to rise.

West Fertilizer Co.

WEST, TEXAS APRIL 17, 2013 Fire causes ammonium nitrate to explode, killing 15 people, mostly firefighters.

Williams Olefins GEISMAR, LA. JUNE 13, 2013 An explosion involving a heat exchanger and loose pipes kills 2 people and injures 114 others. Advanced Environmental Recycling Technologies

SPRINGDALE, ARK. JULY 17, 2013 A dust flash fire kills a worker and injures two others.

American Vinyl Co.

OPA-LOCKA, FLA. NOV. 7, 2013 A 20,000-gallon tank explodes, killing one worker and injuring five others.

Freedom Industries

CHARLESTON, W. VA. JAN. 9, 2014 A one-inch hole in a tank with the chemical MCHM causes a massive spill. Hundreds of thousands of people are told not to use tap water for weeks.

DuPont

LA PORTE, TEXAS NOV. 15, 2014 A release of methyl mercaptan kills four workers.

ExxonMobil

TORRANCE, CALIF. FEB. 18, 2015 An explosion at a refinery injures two workers. If a tank of hyrdrofluoric acid had ruptured in the explosion, more than 200,000 people could have been killed from the toxic cloud, the Chemical Safety Board finds.

Liquid Transfer Terminals

BAINBRIDGE, GA. AUG. 19, 2015 A tank explosion of sodium hydrosulfide kills one worker, injures others and forces two dozen homes to evacuate for hours.

SunEdison

PASADENA, TEXAS OCT. 2, 2015 Four workers are burned, one severely, in a silane explosion.

Dow Chemical

NORTH ANDOVER, MASS. JAN. 7, 2016 Five workers are injured when a reaction between trimethylin-dium and water causes an explosion.

Peroxy Chem

PASADENA, TEXAS JAN. 16, 2016 A runaway chemical reaction causes a tanker truck to explode, killing one worker and injuring three others.