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Mine Attractions In Helena

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Helena is the state capital of the U.S. state of Montana and the county seat of Lewis and Clark County. Helena was founded as a gold camp during the Montana gold rush, and was established in 1864. Over $3.6 billion of gold was extracted in the city limits over a duration of two decades, making it one of the wealthiest cities in the United States by the late nineteenth century. The concentration of wealth contributed to the city's prominent, elaborate Victorian architecture. At the 2010 census Helena's population was 28,190, making it the fifth least populous state capital in the United States and the sixth most populous city in Montana. It is the princ...
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Mine Attractions In Helena

  • 1. Montana Blue Jewel Mine Helena
    Yogo sapphires are a variety of corundum found only in Yogo Gulch, part of the Little Belt Mountains in Judith Basin County, Montana, United States, on land once inhabited by the Piegan Blackfeet people. Yogos are typically cornflower blue, a result of trace amounts of iron and titanium. They have high uniform clarity and maintain their brilliance under artificial light. Because Yogo sapphires occur within a vertically dipping resistive igneous dike, mining efforts have been sporadic and rarely profitable. It is estimated that at least 28 million carats of Yogos are still in the ground. Jewelry containing Yogos was given to First Ladies Florence Harding and Bess Truman; in addition, many gems were sold in Europe, though promoters' claims that Yogos are in the crown jewels of England or the...
    From Wikipedia, the free encyclopedia.
  • 4. Berkeley Pit Butte
    The Berkeley Pit is a former open pit copper mine located in Butte, Montana, United States. It is one mile long by half a mile wide with an approximate depth of 1,780 feet . It is filled to a depth of about 900 feet with water that is heavily acidic , about the acidity of cola or lemon juice. As a result, the pit is laden with heavy metals and dangerous chemicals that leach from the rock, including copper, arsenic, cadmium, zinc, and sulfuric acid.The mine was opened in 1955 and operated by Anaconda Copper and later by the Atlantic Richfield Company , until its closure on Earth Day 1982. When the pit was closed, the water pumps in the nearby Kelley Mine, 3,800 feet below the surface, were turned off, and groundwater from the surrounding aquifers began to slowly fill the pit, rising at abou...
    From Wikipedia, the free encyclopedia.

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