Several hundred scientists from the region and other parts of the world are expected to use this facility so essential for many disciplines ranging from physics to the biological and medical sciences and archaeology.

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Yet that facility, which is essential for modernization to extend the life of aging ballistic nuclear warheads, has now been delayed for at least five years, and some believe, permanently.

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The facility was closed to visitors Wednesday, with only essential personnel asked to report.

CNN: Crews go on offensive against growing Colorado wildfire