Sunshine Metals (ASX:SHN) began a helicopter-borne electromagnetics survey over the Coronation-Highway region at the Ravenswood consolidated project in Queensland, according to a Wednesday Australian bourse filing.

The survey will be used to identify conductive targets at depth, including undiscovered massive sulfide mineralization. It uses the VTEM Max technology, developed by Geotech Ltd (Canada).

Sunshine said that it will follow up on any high-priority targets with on-ground activities.