Rio Tinto subsidiary Coal and Allied are using the latest agricultural technology to plant a blend of native grass seeds over 80 hectares of rehabilitated mining land.
The seed mixes are made up of the same level of species diversity found in the local ecological communities.
Environmental services manager Andrew Speechly said results for new growth at the Hunter Valley Operations and Mount Thorley Warkworth mines were promising, the Newcastle Herald reported
"Understorey species are an important component of healthy native vegetation communities but do not feature significantly in existing mine site rehabilitation," he said.
"The use of local native seed is necessary to return the land to as close as possible to its original state."
"We've worked for up to a year on soil preparation in places with outcomes including naturally aerated soil, re-established soil microbes and contoured land conducive to water infiltration," said Tyrone Parrey of Parrey Pastoral Rehabilitation.
"These outcomes lay a healthy foundation for native plants to establish and grow."