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CAMP LEJEUNE, N.C. (AP) -- Another four pounds of mercury have been found at a Camp Lejeune water plant that's expected to remain offline for at least two more weeks as a contractor continues to search for the toxic liquid metal.

Eight pounds of elemental mercury were found Sept. 15 at the Hadnot Point Water Treatment Plant. A possible source is water pressure meters containing elemental mercury that were removed from the plant in the 1980s and replaced with digital meters.

A New Bern contractor has since found four more pounds. The total 12 pounds is equal to about 1.5 pints.

Base spokesman Nat Fahy said the contractor began Tuesday using cameras in non-accessible areas of the piping and reservoir to determine if mercury has settled in other places.

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