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Richard Hammond's Blast Lab

Series 4

Episode 3

Duration: 30 minutes

on CBBC Channel

Richard Hammond presents another edition of his science game show, as the Lab Rats travel back in time to Roman Britain to retrieve a ballista, a formidable siege weapon. Show more

CBBC Channel

About CBBC

CBBC is the BBC's multiplatform offering for 6-12 year olds bringing the very best drama, entertainment and factual programmes to its young viewers.