Discoverer Core Trays Home ›› Local Listings ›› QLD ›› Yandina ›› Discoverer Core Trays QLD Mining Yandina, QLD 4561 Denley Young07 5446 8088https://www.coretrays.com The Discoverer core tray products are manufactured by an Australian based company named Yandina Plastics Pty Ltd. We supply our Discoverer core trays / boxes to mining and exploration companies, the drilling industry, construction businesses, research facilities, core libraries and energy companies within the domestic and international markets.