Nitrogen, a fundamental nutrient for plant development, exists in forest soils primarily as ammonium and nitrate. The form that plants preferentially absorb influences species competition, forest ...

The FBI and federal prosecutors alleged that Park had supplied about 270 pounds of ammonium nitrate, an explosive precursor that can be used to make homemade bombs, to Bartkus.

Man charged with supplying explosive chemicals to bomber of Palm Springs fertility clinic U.S. Attorney Bill Essayli says Daniel Park shipped 180 pounds of ammonium nitrate to Guy Edward Bartkus ...

Park shipped 180 pounds (about 82 kilograms) of ammonium nitrate to Bartkus in January and bought another 90 pounds (about 41 kilograms) and had it shipped to him days before the explosion ...

Park shipped 180 pounds of ammonium nitrate to Bartkus in January and bought another 90 pounds and had it shipped to him days before the explosion, authorities said.

Ammonium nitrate was the main suspected chemical in a Texas explosion that killed 14 people in April 2013.

Federal authorities have arrested a man at JFK airport in New York who allegedly provided bomb ingredients to the suspect responsible for last month’s attack on a fertility clinic in Palm Springs.

Daniel Park of Washington supplied ammonium nitrate to suspect accused of carrying out attack, authorities say.

Authorities say Danie Park, 32, collaborated with Guy Edward Bartkus, who died in the explosion in Palm Springs, California, last month.

Park shipped 180 pounds of ammonium nitrate in January to Bartkus and bought another 90 pounds of the chemical and had it shipped to Bartkus days before the explosion, authorities said.