Popular TV programme Time Team is set to feature a Lincolnshire dig - and show that the Romans were keen recyclers.
Tony Robinson and archaeologist Phil Harding spent three days on a dig in a field at Wickenby, near Market Rasen.
The programme, called the Romans Recycle, is to be screened on Channel 4 on Sunday, March 23.
Filming was done in May last year and evidence of a Romano-British settlement, whose inhabitants melted down coins and brooches and re-used the metal, was discovered.
Assistant producer of Time Team Ben Knappett said: "The Romans were big on recycling. They had this big metal working site at Wickenby where they would re-use brooches and things like that.
"They would melt them down and re-use the metal."
Metal detectorist Keith Kelway (57), a heritage studies student, first found artefacts on the site abut five years ago.
"I've made about 500 finds from the late Iron Age and Roman periods which include loads of coins, brooches, military items, pottery and even some chariot sittings," said Mr Kelway, who lives in Doddington Park, Lincoln."