An Australian environmental consultancy is to conduct further tests into the Basamuk Bay slurry spill on Papua New Guinea's north coast.
The spillage from the Ramu nickel mine in Madang, which turned the water and the shoreline red, and resulted in a fishing ban, has been called the worst environmental disaster in PNG.
There have already been two investigations of the spill, with the PNG Conservation and Environmental Protection Authority concluding there was no pollution.
An independent report for the Madang government found otherwise and the Post Courier reports the government has now agreed to bring in BMT from Australia.
The Conservation Minister, Wera Mori, said the new investigation would be a highly integrated, multi-disciplinary study, with government officials, and independent investigators, contributing to the BMT study.