NHK...

The company began full-fledged operation of 2 filtering devices on Monday after a series of test-runs.

TEPCO says each device is capable of treating up to 30 tons of seawater per hour. Tests showed the machines reduced cesium levels by 20 to 30 percent. The company says it will find ways to increase filtering capability.

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Tokyo Electric Power Company has further postponed the test-run of a new system to treat highly radioactive water that threatens to overflow from the Fukushima Daiichi nuclear plant. The operator says it wants to conduct the test-run on Tuesday or later -- more than 4 days behind schedule.

TEPCO had initially planned to start the test-run of the water decontamination system last Friday. The 4 devices include one made by a US firm to remove cesium.

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Yeah... I know... ???

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Some more workers have been exposed to high levels. One guy "forgot his mask" while working outside.