Atomic Eagle (ASX:AEU) refined and confirmed previously identified radiometric anomalies across five target areas during ground radiometric surveys at the Muntanga North exploration area within its Muntanga project in Zambia, according to a Thursday filing with the Australian bourse.

Close-spaced surveying found peak radiometric zones within broader anomalies, aiding drill targeting in the surveyed areas, the filing said.

A total of 53 line kilometers of a planned 80-kilometer survey has been completed across five of eight priority target areas, with the remainder to be completed in the second and third quarter of the year, per the filing.

Shares fell more than 1% in morning trade Thursday.