One dead after second deadly Louisiana chemical explosion in two days (VIDEO)

One person was killed Friday and at least five were injured after a nitrogen vessel exploded at a Donaldsonville, Louisiana fertilizer plant, the second such deadly chemical explosion in two days in the Southern state.

The nitrogen vessel appears to have exploded with no fire, wrote NOLA.com, and it appears that workers accidentally over-pressurized the equipment, causing the fatal blast — though it remains unclear what happened.

Read more from GlobalPost: Louisiana chemical plant explodes, injuring 77

The plant is owned by CF Industries, which employs 2,400 people and describes itself as "the second largest nitrogen fertilizer producer in the world and the third largest phosphate fertilizer producer among public companies." The company website added the company "adheres to stringent security standards at all of its operations."

Louisiana State Police Trooper Jared Sandifer told the Associated Press on Saturday that officials with the federal Occupational Safety and Health Administration will visit the site as soon as possible to investigate. 

Presciently, a May 1 article from Baton Rouge newspaper "The Advocate" expressed local fears about the safety of the CF Industries plant, in the wake of April's massive Texas chemical explosion. A 2000 explosion at the Donaldsonville plant killed three people and injured eight. 

On Thursday, an explosion at a Williams Olefins plant in Geismar, Louisiana killed one man immediately, 29-year-old  Zachary Green. Scott Thrower, 47, was burned during the incident and died Friday, according to the Los Angeles Times.

 “He was one of the victims we were concerned with overnight,” said Louisiana State Police Capt. Doug Cain. “Unfortunately, we never had a chance to speak to him," he added, as investigators don't know where Thrower was standing during the blast. 

Seventy-seven people were injured in the Geismar explosion and eight remain in the hospital, according to NOLA.com, which added that parent company Williams is still trying to determine the cause of the accident.