Summary

The New International Encyclopædia…

The State is too recently settled for manufacturing to have become normally developed, being as yet limited largely to purely domestic industries. In connection with its valuable mineral resources, however, it has a very important smelting and refining industry, the copper product in 1900 being estimated at $36,387,000, and the lead product at $5,264,000. One of the largest copper smelters in the world is at Anaconda, and the abundant water power, afforded chiefly by the Missouri, has also served to develop this industry at Butte, Great Falls, and other points.
Source: Wikisource

The New International Encyclopædia…

Bituminous coal is found along the eastern base of the mountains, and extensive beds of lignite exist in the east along the Missouri and Yellowstone rivers, while petroleum is also found. Copper is very abundant, and lead, iron, and silver ores also exist, the silver generally in conjunction with the copper: gold has been found in great quantities in many parts of the State. Around the headwaters of the Missouri and Yellowstone there are numerous hot springs and geysers.
Mining. The prosperity of Montana has been due largely to the development of its mineral resources.
Source: Wikisource

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