By Capt. Paul (Eclogite) on Monday, August 4, 2008 - 06:32 pm:
The 7th level of Quincy (adit level) stays a constant 43° year around. If there is a breeze blowing through, the wind chill can make it feel a bit cooler. As the other Paul stated, the mines of the Copper Country (and all over the world for that matter) get much hotter as you go deeper as a result of something called the geothermal gradiant of the earth. For the UP mines, the temperature reached about 100° at the deepest parts of Quincy and C&H. Homestake Mine in South Dakota was about 120° at the bottom, 8,000 feet down. The mines in South Africa however, are the deepest in the world at 12,136 feet vertical. At those depths, temps can reach 160° with 100% humidity. Fortunitely, the air at those depths is cooled for the workers...... to a "comfortable" 100°.
By maija in Commerce Township (Maija) on Tuesday, August 5, 2008 - 08:33 am:
Kinda like summer in Houston, hey?
By Capt. Paul (Eclogite) on Tuesday, August 5, 2008 - 09:56 am:
Exactly!! I wish I was back in Scotland, where we experienced their hottest day of the year: 77°.
By Deb S. (Usedtobeayooper) on Monday, August 11, 2008 - 10:56 pm:
Love the shot of the bridge. But I love any shot of that bridge.