Valor executive chairman Mark Sumner said the company was looking to permit five platforms for about 3,000m of reverse circulation drilling at Corona.

"Our aim will be to test the highest priority targets, generated by high grades at surface along with chargeability anomalies identified in the geophysical surveys," he said.

"This will give us a sense of the thickness of mineralised intercepts and set up the next drilling program at Corona, which will be designed to establish a maiden JORC resource."

Corona, 1,500m south-west of Berenguela Central, had outcropping mineralisation "very similar to the surface outcrops previously identified at Berenguela Central", Valor said in a market statement this week.

"We have always maintained that we have only scratched the surface at Berenguela and the mineralisation tested at Corona is clear evidence of this. Corona was discovered by utilising both historical exploration results, as well as a simple and inexpensive surface sampling and field mapping exercise," Sumner said.

"We have sample results pending from the Berenguela Central area also, which will give us an idea of the potential for further at-surface, high-grade mineralisation."

Valor expects to announce the latest Berenguela Central results next week.

The company's plus-9,100m of drilling on Berenguela since May last year lifted its JORC indicated and inferred resource to 25.53 million tonnes grading 1% copper and 112.97 grams per tonne silver (about 90% indicated). Sumner says the deposit area occupies about 2% of Valor's 6,594-hectare land package at Berenguela.

Valor's work has added to more than 30,000m of historical drilling, two geophysical surveys, 17,000m of underground workings, and extensive past metallurgical test data.

The company had a market value this week of about A$29.7 million trading at 2c.