They told a news conference in Port Moresby, the Government should not take over shares held by P-N-G Sustainable Development Program.
Representatives from South, Middle and North Fly, say the present arrangement is alright and should remain.
They met with the Prime Minister in August and he told them, he would respond to their concerns in three weeks time, but he has not done so.
Landowner spokesman, Richard Zumoi told NBC News, P-N-G-D-S-P must stay, to continue its service to the Western province and Papua New Guinea.
The landowners says, if the National Government still wants to take over P-N-G-S-D-P-L shares, then it should pay one-point-three billion Kina to all stakeholders, including landowners and the workers of OTML, who remained loyal, during talks for extending the mine's life.