Locations of ammonium nitrate storage facilities in Texas
(Source: Texas Department of State Health Services)
Map by Matt Goodman / WFAA.com This interactive map shows the 121 locations statewide that Texas lists as storing more than 10,000 pounds of ammonium nitrate. The West Fertilizer Co. reportedly had more than 500,000 pounds of the chemical. This map by no means indicates that these plants are likely to explode –– it's simply a tool showing locations of storage and retail facilities. The Texas Tribune also has a similar map that shows the amount of chemicals each plant has and their proximity to schools, hospitals and other locations of interest.