BARBERTON, Ohio-- No hazardous or suspicious material was found after a scare at Babcock & Wilcox Power Generation Group, Inc in Barberton Thursday.
An employee opened a letter and found a white, powdery substance inside just before noon. There was a document inside, along with the substance.
The woman reported mild symptoms, including burning eyes and sneezing. She is being examined.
Initial tests on the substance yielded negative results, but additional tests will be done off site.
Anyone who came in contact with the woman was quarantined during the investigation.
The company said visitors and employees were not allowed to enter or exit the Van Buren Ave. complex but the restriction was lifted around 3:30 p.m.
It is not known where the letter came from or who it was addressed to.
Police, fire, Summit County Hazmat and the FBI were all on scene.
According to the company's website, Babcock & Wilcox Power Generation Group, Inc. "continues to provide the industry's most advanced steam generating equipment, emissions control equipment, and services for the existing fleet of power plants."
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(FOX 8's Jennifer Jordan contributed to this report.)