| The staff area where the envelope was opened was closed off 
				for a time, but the library itself remained open to the public, 
				said Melissa Giller, a spokeswoman for the Ronald Reagan 
				Presidential Foundation and Library.
 A Ventura County hazardous materials team dispatched to the 
				library determined the substance was non-toxic, Giller said. The 
				worker who opened the envelope and two other staff members who 
				were believed to have been exposed to the substance were cleared 
				of any health concerns, she added.
 
 (Reporting by Alex Dobuzinskis; Editing by Peter Cooney)
 
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