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A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, sand or rock dust.. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated.
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 categorised by how many stamps they have, i.e. a "10 stamp mill" has 10 sets.
Following incorporation, other machines had been added to the line of New Holland machinery. In 1912, the company began manufacturing its own rock crusher and, by 1914, the New Holland Machine Company had also added a wood saw to its line of farm machinery. [15] By 1911, the company had 150 employees. [6]
The company has produced specialized crushing equipment to allow effective reclamation of building materials for over 40 years; in 1959, Terex Pegson equipment was crushing and processing recyclable materials for use in the construction of the Mauvoisin Dam high in the Swiss Alps. Terex Pegson was founded in 1830 as Samuel Pegg and Son.
After a short time away from the industry, Edison decided to return, adapting his methods to crush rocks brought up directly from a mine.He opened a plant in Bechtelsville, Pennsylvania near to existing iron mines as a trial before building one of the world's largest ore-crushing mills in the world at the time in Ogdensburg, New Jersey.
A dolly pot, also known as a dolly, is a portable tool used for crushing small quantities of gold-bearing rock, by hand, in a process known as dollying. In principle, a dolly pot is somewhat like a large mortar and pestle, but is always made of metal and is intended specifically to crush hard rocks like quartz. It is typically flat at the ...
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