Canary in a Copper Mine
Submitted by Atlas Indicators Investment Advisors on May 31st, 2023
While there are more humane approaches to detecting carbon monoxide available today, coal mines used canaries beginning in 1911 at the advice of Scottish scientist John Haldane. Carbon monoxide is a colorless and odorless gas that causes suffocation when it is concentrated in the air, so having a way to detect it in a mine was lifesaving if you weren’t a songbird. Once the chi