Eighty are being tested for pozzolan and 40 for perlite. The tests follow on from the intersection of thick zones of tephra pozzolan from bedrock surface in step-out holes in the Main and Northeast Zones earlier in the year.
Sunrise is now in the process of planning a bulk sample, and requests have already been received from potential customers to supply raw perlite for commercial scale expansion trials, the company said in a statement.
In addition, the natural pozzolans at CS are being evaluated as a green replacement for Portland cement in cement mixes and concrete mixes.
Perlite is used as a lightweight industrial material and horticultural growing medium.
Baseline permitting is set to begin in April and contractors have already been selected for the work.
“Interest in our planned perlite production from consumers is keen and we will accelerate the bulk sampling and commercial scale trials to service this demand,” said Sunrise chairman Patrick Cheetham.
In afternoon trading Sunrise shares were 3.9% higher at 0.14p.
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