Sunrise Resources has announced successful proof of concept perlite processing trials and expansion of horticultural grade perlite in further customer trials. Highlights Company is progressing a low capital cost concept to produce a horticultural grade raw perlite and by-product finely crushed natural pozzolan using mobile processing equipment. Work completed with equipment suppliers to trial mobile primary and secondary crushers and high frequency screens to prove the concept. 7-ton bulk sample of perlite processed to produce a horticultural grade raw perlite and a finely crushed perlite for sale as natural pozzolan. Horticultural grade raw perlite product expanded successfully in customer's commercial scale plant. Process flow sheet now being optimised. Larger trial planned for 100-ton bulk sample already collected to produce larger amounts of horticultural grade perlite for supply to a wider range of potential customers. Horticultural grade raw perlite is a higher price perlite product and typically sells for around USD 100/t.