Dateline Resources (ASX:DTR) said that recent test-work programs confirm key inputs or assumptions used in the scoping study at its Colosseum gold and rare earths project in the US, according to a Monday filing with the Australian bourse.

The metallurgical test-work met expectations of a 91% to 92% gold recovery rate, the filing said.

Test-work results also support the potential for more efficient open-pit design compared to earlier estimates, the filing said.

The increase in gold prices is also expected to have a strong positive impact on the project's economics, the company said.