Treadwell gold mine

This area of the Coast Mountains between Burners Bay and Wyndham Bay was soon named the Juneau Gold Belt.

Gold deposits in this belt provided impetus for development of the three largest mines, the Treadwell Mine on Douglas Island and the Alaska Gaston and Alaska Juneau on the mainland east of Juneau.

At the peak of production, these three mines were processing a total of about 30,000 tons of ore Wow.

Where did they put all the tailings? Oh, I want to know now.

Dangerous.

The mines eventually produced nearly 7 million ounces of gold, $2.1 billion at $300 an ounce.

How much is gold? Now, the Treadwell Mine operated until 1917.

When removal of pillars holding the roof apparently caused collapse of the roof and flooding of the mine.