NEWPORT, Ind. -- An Army contractor has resumed destroying the deadly nerve agent VX following a spill of wastewater last week at the complex built to destroy the Cold War-era chemical weapon.

Workers restarted one of the two reactors Friday at the Newport Chemical Depot, spokeswoman Terry Arthur said. About 300 gallons of caustic wastewater spilled March 14 from the other reactor.

Repairs continued Wednesday on the second reactor, where a drain plug dislodged during maintenance and allowed the wastewater to spill into a contained area.

No workers were injured or exposed to the wastewater, officials said.

Last week's accident at the depot about 30 miles north of Terre Haute was the fourth such spill since May, when Army contractor Parsons Technology Inc. began destroying VX at the complex.

The reaction creates the wastewater, called hydrolysate.

A single droplet of VX can kill a human in minutes by paralyzing their nervous system, causing suffocation.

Arthur said she expected the second reactor to resume destroying VX on Thursday.

As of Tuesday, the Army reported that 35,012 gallons of VX had been destroyed _ about 14 percent of the more than 250,000 gallons originally stored at the depot. The project is expected to create between 2 million and 4 million gallons of hydrolysate.

A federal review continues into the Army's plan to ship the hydrolysate to a DuPont Co. plant in New Jersey for final treatment and disposal into the Delaware River.