So, what’s new?
Not a lot! Back in the late 1970s detector manufacturers regarded the 8-inch diameter coil as the ‘standard’ coil; this being best compromise between depth and the ability to locate coins and smaller items. As a Rule of Thumb, a search coil will generally penetrate to about its diameter.
Thieves apparently searching for scrap metal raided a storeroom belonging to the Canterbury Archaeological Trust and made off with thousands of rare Anglo-Saxon and Iron Age artefacts. The Trust’s Director, Paul Bennett, likened the raid (somewhat over-dramatically I have to say) to Isis’s destruction of ancient archaeological sites in Syria and Iraq.