1.   And leftover plutonium in nuclear waste is to be buried in underground dumps, as in America.

2.   In its place, spent fuel holding the deadly element was to be buried in underground dumps.

3.   The Washington Post reports parts of the toxic material will be encased in concrete blocks or glass and placed in a permanent underground dump.

4.   These underground dumps have not been lined with clay, causing a risk that radiation could seep into the water supply.

5.   Meanwhile, an underground dump used in the early days of the lab remains ablaze.

6.   It also reiterated firm opposition to a proposed underground nuclear waste dump at Sellafield, expected to be announced this month.