Mine: Aetna Mine, Keweenaw County

Sunk→ Aetna Mine→ Closed

Operated for 10 years.

Opened: 1863

Closed: 1873 but an active corporation.

Lifetime Production: 7o tons of ingot copper.

Notes

Source: [CHBK]

Time Line

1863. Opened.

1873. Closed

1899. Reincorporated for 30 years. [CHBK]