BRISTOL BAY - The company hoping to develop the Pebble mine expects to spend $73 million this year for studies and test drilling.
The Northern Dynasty Minerals company of Vancouver, British Columbia, said the information will be used next year in permit applications.
The Anchorage Daily News reported the company is facing opposition from fishermen, sportsmen and Native organizations who say the huge mine would threaten two rivers that support Bristol Bay salmon.
Pebble Partnership chief executive John Shively said Alaskans will get a chance to review the development plan.
Supporters said the mine would create hundreds of jobs and supply copper, gold and a steel component called molybdenum.