Maori in Golden Bay are calling on the Ministry of Economic Development to carefully check the credentials of an Australian company seeking mining exploration permits in the region.
Greywolf Resources has applied for oil and gas and coal permits covering wide areas of Golden Bay and Buller.
Chris Hill, a spokesperson for Manawhenua Ki Mohua - comprising three local iwi - says there are increasing questions about Greywolf's financial status and its technical abilities.
Ms Hill says it would be disappointing if the Government awarded permits to any company without a strong financial base.
A former chairman of the Golden Bay Community Board says Greywolf's website worries him, as it shows Milford Sound to illustrate its New Zealand mining interests.
Joe Bell says there is concern about Greywolf's applications to explore the coastline around the Abel Tasman National Park and Farewell Spit at the top of the South Island.
Mr Bell says his emails to the company have bounced back.