The head of a team investigating the cause of the Tumbi landslide in Papua New Guinea's Southern Highlands province says he will present an assessment report this week.
The January 24 disaster is believed to have killed at least 25 people.
While a government-flagged investigation is yet to get underway, the Tumbi landowner community has commissioned Tindipu Hapo to lead a team which includes local scientists.
He has indicated that techniques used by contractors operating quarries for Exxon Mobil in its Liquefied Natural Gas project have come under scrutiny.
"It's largely to be said, the landslide is a man-made disaster - not like it's naturally landslides. Right now I haven't finished testing. I'll give full details in the report when I finish everything up."