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how a gold stamp mill works

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This 20 stamp ore crusher, was donated in 1989 by Mr. and Mrs. Joseph Jones of Albuquerque, New Mexico. Twenty eight days were required for five men, all volunteers to disassemble and move the mill to Apache Junction, Arizona. This mill was state of the art technology for recovering gold in the 1800s.

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Stamp Mill

Geology - Gold Mines Desert Mining History Stamp Mill A stamp mill was a mechanical crusher, noisy, heavy and somewhat awkward to operate. The stamps were heavy metal weights that were lifted and dropped on the ore by a crankshaft. The crushed ore

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Gold Milling Process

Jan 13, 2016Gold Ore Milling Process. Their method of mining was then, and is now, the following: A small water-furrow is first brought in at the highest possible level on a suitable hill-side, and the stream is turned down the hill. By means of a heavy long wooden crowbar, shod with a long strongly- made chisel-pointed iron socket, and with the help of

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Using Ball Mills to Extract Raw Gold from Ores

Jun 14, 2018Its major purpose is to perform the grinding and blending of rocks and ores to release any free-gold that is contained within them. At major mines, the mill was the critical equipment that was required to process the ores that were extracted from deep underground. Many early mines used stamp mills, but many operations today find that ball mills

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Stamp Mill – Explore Real California Gold Mines!

Jul 07, 2018The stamp mill was the big gold machine of its day. By 1850 in California all of the rivers and streams had been picked clean of placer gold. It didn't take long for miners to follow the gold deep into the Sierra's steep valleys to snow white quartz outcroppings.

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Stamp Milling

Oct 28, 2016In 1850, the first stamp mill seen in California was erected at Boston Ravine, Grass Valley. The stamps consisted of tree- trunks shod with iron, and the framework was constructed of logs. The ordinary method of reduction and

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Stamp Mill Demonstration

Dec 12, 2018This is a demonstration of a working stamp mill commonly used to crush ore during the 1800s and early 1900s. This video was taken at the Alpine County Museum

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Feliciana Mine – Explore Real California Gold Mines!

Jun 15, 2018Jun 15, 2018The mine was discovered by Mexicans working the area in 1860. Several foundations exist and some equipment. The massive tailings pile was littered with white quartz. We slid down it to the site of the stamp mill which was in ruins. Only a compressor and a few scattered stamps were recognizable. It was a long hike back up the hill.

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Reed Gold Mine Ten

This mill, built by the Mecklenburg Iron Works of Charlotte, North Carolina, is original except for the timber work. Two groups of five 750-pound stamps with 5- to 7-inch lift, rose and fell thirty-five times a minute to yield a finely crushed ore. It is typical of those used in the late nineteenth century, not only in this state but in the

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Stamp mill

A stamp mill consists of a set of heavy steel (iron-shod wood in some cases) stamps, loosely held vertically in a frame, in which the stamps can slide up and down. They are lifted by cams on a horizontal rotating shaft.As the cam moves from under the stamp, the stamp falls onto the ore below, crushing the rock, and the lifting process is repeated at the next pass of the cam.

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The Single Most Important Tool Used in the Gold Mines

Sep 25, 2017Several stamps were used on a stamp mill. Single stamps, 3-stamp, 5-stamp, and even 20-stamp mills were in operation at some of the larger mines. As mines grew larger and extracted more ores, the need for bigger stamping operations was evident. It was common for successful mines to upgrade their equipment throughout the years.

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Gold and Tailings: The Standard Mill at Bodie, California

A stamp mill is similar to a mortar and pestle. Indeed, the vessel holding the ore being crushed is called a mortar. A stamp mill works by repeatedly dropping one or more heavy stamps on ore in the mortar. To mechanize the repeated lifting and dropping of the stamps, a rotating cam typically engages a tappet on the stem of each stamp.

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The California Stamp Mill

The interior of a quartz mill at Grass Valley, Nevada County, the leading center of hard-rock mining, as illustrated in the October 1857 issue Hutchings' California Magazine.. To the rear stand two four-stamp batteries, or mills. The cast-iron stampers, or pestles, weighing from six hundred to a thousand pounds, were raised by the revolving horizontal driveshaft and then fell with tremendous

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