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The Tangential Impulse Water Wheel in California Gold Mining History—Part II

Even before Pelton relocated in San Francisco in 1888, many other competitive foundries and machine shops chose to enter the water wheel market. These firms were already busy with the mining trade, producing hoists, stamp mills, ore carts, Cornish pumps, crushers, grinders, compressors and drills.

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Barnes Store and Yankee Jims


...there was much speculation about what happened to Yankee Jim after he sold his claims and moved away. Rumors had it that he was involved in many underhanded activities, including arson at several different town sites.

Higher Zinc Price Creates Opportunity


Zinc is brittle and crystalline at ordinary temperatures, but when heated to between 110°C and 150°C it becomes ductile and malleable; it can then be rolled into sheets. The bluish-white metal is used principally for galvanizing iron, but also...

Gold in The Midwest--Part I


Gold can potentially be found in all the glaciated areas of the Midwest, but to find it in any appreciable amount one needs to look to areas where the gold gets concentrated by more recent water flows.

Pediments


A pediment is a broad, gently sloping erosion surface or plain of low relief that is often found in arid and semi-arid regions at the base of a receding mountain front. The example shown is from the Palo Verde Ranch 15-minute topographic quadrangle, southwest of Tucson, Arizona. This is one of the best examples the writer has ever seen.

The Bawl Mill


• “Mom” and “dad” expelled from school?
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Ask The Experts: Is this BLM demand legitimate?


Q: The Arizona BLM state office has started sending out registered letters to association placer claim holders...

Sam, the Tenderfoot Prospector


There were many thousands of tenderfoot, greenhorn prospectors that came out west in the 1860s and 70s. Some came to make their fortunes; some came to flee other problems back east; and some just came for the adventure. Probably every one had a tale to tell, but one of these adventurous individuals was a young man named Sam, and this is his true story.

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