Greatland Gold, a mineral exploration and development firm, has commenced drilling at its Warrentinna project in north-east Tasmania, Australia.

The project covers approximately 110 square kilometers of rocks prospective for gold mineralisation.

The company said that the Derby North area is located within this project and has, to date, been an area of focus for it.

Previous reverse circulation drilling by the company at the Derby North area returned results of 5m at 29.26g/t gold from 36m, including 1m at 103.07g/t gold.

The company has received all necessary government approvals for a proposed follow-up reverse circulation drilling program at the Derby North area.

After initial site delays in March, the company has commenced reverse circulation drilling at Derby North.

The current drill program will test the continuity of mineralization intersected previously and will also examine southern and western strike extensions to mineralization.

Initial sampling of drill holes will be as 4m composites, and significant results from 4m composite sampling will then be re-sampled as 1m intervals to better define grade distribution and assess repeatability of gold grades, the company said.