Most of the mining companies in PNG provide shallow reasons to government to allow them to dispose mine waste into river or deep sea tailing placements.
- Topography
- Climatic conditions.
-Geological structures with respect to seismic activities.
- Soil/rock competency etc..
The above are the factors that pose threat to the tailings dam construction, thus developers propose to dump tailings into riverine and deep sea tailings placement.
Hidden Valley mine and K92 mine have built TSF and it is anticipated that other new mining projects could build TSF.