Assertion: beryllium | /r/ObjectUse | used as moderator
Facets:
value: in nuclear reactors
type: LOCATION
value: in a copper alloy
type: OTHER
Source sentences:
text: Beryllium is also used as a moderator in nuclear reactors.
text: It is used as an aerospace structural material, as a moderator and reflector in nuclear reactors, and in a Copper alloy used for springs, electrical contacts, and non-sparking tools.