Historically, Tennessee's most important mining products have been iron, bituminous coal, copper, lead, zinc, and phosphate. Iron ore was the most significant during early settlement years. Interest in the iron ore of the Western Highland Rim dates back to the 1790s and even earlier in the eastern mountains.istorically, Tennessee's most important mining products have been iron, bituminous coal, copper, lead, zinc, and phosphate. Iron ore was the most significant during early settlement years. Interest in the iron ore of the Western Highland Rim dates back to the 1790s and even earlier in the eastern mountains.
Answer: Numb Toes Can be Caused by Simple or Serious Problems. Toes go numb from reduced blood circulation or from nerve damage. If your toes feel numb only during sustained walking, then first try to rule out the most obvious cause - your shoes.
Raynaudâs Disease. Raynaud's disease is a condition that causes some areas of your body â such as your fingers, toes, tip of your nose and your ears â to feel numb and cool in response to cold temperatures or stress. It's a disorder of the blood vessels that supply blood to your skin.