The Pyrolytic graphite core, grade CGB, also served as the moderator.

In some cases an abrasive was used to shape the graphite core, while the wood was cut some other way.

In the furnace, an electric current was passed through a graphite core, surrounded by sand, salt, and carbon.

The electric current heated the graphite and other materials, allowing them to react, producing a layer of silicon carbide around the graphite core.

The fuel rods were once inserted into the 700-ton graphite core through the south face of the reactor, which is today dotted with 1,369 empty holes.

The accident at Chernobyl was due to the graphite core of the reactor catching fire after the cooling system failed.

Neutron bombardment begins to cause vertical expansion of the graphite core, enough to mean structural damage by 1995.

Another set of holes in the graphite core of the reactor is designed to accommodate control rods, rods made mostly of boron.

The small clearance between the pressure channel and the graphite block makes the graphite core susceptible to damage.

The fluid becomes critical in a graphite core which serves as the moderator.