South Taranaki's Ngā Rauru iwi is feeling excluded from full input into proposed seabed mining offshore from Patea.
Trans-Tasman Resources (TTR) is in Environmental Protection Authority (EPA) hearings over its application to mine 50 million tonnes of iron-sand a year over 65 square kilometres of seabed offshore from Patea.
Ngā Rauru is due to have its say in the hearings in New Plymouth on Monday.
Turama Hawira will speak in te reo Maori, supported by five others. But Ngā Rauru Kītahi tumu whakarae Te Pahunga Marty Davis says it deserved much more.
On Monday the Ngā Rauru submission follows that of Ngāti Ruanui, the iwi that would have mining offshore in the sea area over which it has mana.