Coretrack was former WA listed drilling technology company. In 2015 it shifted to Brisbane and became LWP Technologies. In 2019 it became Tillegrah Ltd, remaining an Australia-based energy technology company. It was delisted in early 2020. LWP Technologies (ASX: LWP) had been focused on developing a next generation, fly-ash based, proppant for use in hydraulic fracturing (fracking) of oil and gas wells globally. LWP Technologies was formerly listed on the ASX as a drilling technology company Coretrack Ltd (ASX:CKK) which agreed to acquire Ecopropp in May 2014. The investment in Ecopropp provides exposure for LWP Technologies shareholders to the booming hydraulic fracturing market.