US presidential candidate Joe Biden is vowing to block the controversial Pebble Mine project in Alaska's Bristol Bay if he is elected

"It is no place for a mine," the former vice president said in a statement to the media.

"The Obama-Biden Administration reached that conclusion when we ran a rigorous, science-based process in 2014, and it is still true today."

Biden said Bristol Bay is an economic powerhouse that should be protected for Alaska Natives and fishermen, according to The Anchorage Daily News.