How nuclear waste could be disposed of

1.

Nuclear waste, mixed with resins,

is poured into steel containers where it sets into insoluble blocks

2.

Containers are placed inside a thick-walled sarcophagus, made of copper or steel, and sealed shut

Rock barrier

Concrete

3.

Deep underground, tombs of buffer materials, which soak up radiation and minimise water seepage, surround each tube

4.

Finally, each storage tunnel is filled with concrete. Hundreds of metres of rock form the final barrier

Rock barrier

Concrete

1.

Nuclear waste, mixed with resins,

is poured into steel containers where it sets into insoluble blocks

2.

Containers are placed inside a thick-walled sarcophagus, made of copper or steel, and sealed shut

3.

Deep underground, tombs of buffer materials, which soak up radiation and minimise water seepage, surround each tube

4.

Finally, each storage tunnel is filled with concrete. Hundreds of metres of rock form the final barrier