Search results
Results from the WOW.Com Content Network
The name was also used by Billingsley in a 1918 paper on the Boulder Batholith, published by the American Institute of Mining Engineers. "Tobacco Root" appears in most subsequent publications, including Montana Bureau of Mines and Geology reports (at least since 1933), National Forest Maps (since 1938), and the Official Montana Highway Maps.
Butte is a city in southwestern Montana established as a mining camp in the 1860s in the northern Rocky Mountains straddling the Continental Divide. Butte became a hotbed for silver and gold mining in its early stages, and grew exponentially upon the advent of electricity in the late-nineteenth century due to the land's large natural stores of ...
Before Butte's formal establishment in 1864, the area consisted of a mining camp that had developed in the early 1860s. [5] The city is in the Silver Bow Creek Valley (or Summit Valley), a natural bowl sitting high in the Rockies straddling the Continental Divide, [6] positioned on the southwestern side of a large mass of granite known as the Boulder Batholith, which dates to the Cretaceous ...
While gold had been discovered earlier in the mountain range, the major expansion of mining began in 1882. Expansion continued adding more infrastructure for the mines. As growth continued there were six companies that had stakes in the New World Mining District. Between 1900-1955 the district has produced over 65,000 ozt (2,000 kg) of gold ...
The geology of Montana includes thick sequences of Paleozoic, Mesozoic and Cenozoic sedimentary rocks overlying ancient Archean and Proterozoic crystalline basement rock. . Eastern Montana has considerable oil and gas resources, while the uplifted Rocky Mountains in the west, which resulted from the Laramide orogeny and other tectonic events have locations with met
Butte, America is a 2008 documentary film about Butte, Montana's history as a copper mining town. It was created by Pamela Roberts, narrated by Gabriel Byrne, and includes a mix of first hand accounts and scholarly analysis from John T. Shea, Marie Cassidy, David Emmons, and Janet Finn. [1]
Abandoned mines with their wakes of mine tailings and toxic wastes dot the Rocky Mountain landscape. In one major example, eighty years of zinc mining profoundly polluted the river and bank near Eagle River in north-central Colorado. High concentrations of the metal carried by spring runoff harmed algae, moss, and trout populations. An economic ...
The richest were the 1864 and 1865 placer gold strikes in Confederate Gulch, including Montana Bar, which was one of the most concentrated gold placer strikes ever made. [3] The range takes its name from the fact it is situated in a long belt-like arc. It stretches 75 miles (121 km), making it a mid-length subrange of the Rocky Mountains.