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Slide of the old stamp mill, circa 1950s

Date

1950 to 1959

Description

The old stamp mill, location unknown. A stamp mill (or stamp battery or stamping mill) is a type of mill machine that crushes material by pounding rather than grinding, either for further processing or for extraction of metallic ores. Breaking material down is a type of unit operation. 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. On modern mills, the cam is arranged to lift the stamp from the side, so that it causes the stamp to rotate. This evens the wear on the shoe at the foot of the stamp. 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. Each one frame and stamp set is sometimes called a "battery" or, confusingly, a "stamp" and mills are sometimes categorized by how many stamps they have, i.e. a "10 stamp mill" has 10 sets. They usually are arranged linearly, but when a mill is enlarged, a new line of them may be constructed rather than extending the line. Abandoned mill sites (as documented by industrial archaeologists) will usually have linear rows of foundation sets as their most prominent visible feature as the overall apparatus can exceed 20 feet in height, requiring large foundations. Stamps are usually arranged in sets of five. Some ore processing applications used large quantities of water so some stamp mills are located near natural or artificial bodies of water. For example, the Redridge Steel Dam was built to supply stamp mills with process water.

Image

Correspondence, Levi Syphus to Sadie George

Date

1910-10

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text

Correspondence, Levi Syphus to Mr. A. E. Green and Mr. David Naylor Jr.

Date

1926-02-11

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text

Correspondence, Thomas Toland to F.A. Truett; Thomas Toland to Levi Syphus

Date

1917-05-18

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text

Correspondence, Thomas Toland to Sadie George

Date

1917-05-21

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text

Correspondence, Levi Syphus to Sadie George

Date

1916-01 to 1916-02

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text

Statement of receipts and disbursements: Levi Syphus

Date

1920-06-07

Archival Collection

Description

This folder is from "Financial Records" file of the Sadie and Hampton George Papers (MS-00434)

Text

Correspondence, Levi Syphus to Sadie George

Date

1928-10-18

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text

Correspondence, Levi Syphus to Sadie George

Date

1929-04

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text

Correspondence, Levi Syphus to Dr. W.E. Neel

Date

1926-11-23

Archival Collection

Description

This folder is from the "Correspondence" file of the Sadie and Hampton George Papers (MS-00434)

Text