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A feeder is a piece of material handling equipment used to regulate the flow of a bulk material from a bin or hopper.. A feeder is essentially a conveyor used for short distances where a constant rate of dispersal is required. There are many types of feeders to suit many different industries; ranging from mining, to pharmaceuticals, to agriculture.

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Also, methods often do not require expensive equipment. Gravimetric analysis, due to its high degree of accuracy, when performed correctly, can also be used to calibrate other instruments in lieu of reference standards.

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1 INTRODUCTION TO MINING 1.1 MINING'S CONTRIBUTION TO CIVILIZATION Mining may well have been the second of humankind's earliest endeavors— granted that agriculture was the first.

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