Underwater gold dredges enable miners to initially locate approximate area for precious metals prospecting, while surface dredges help obtain even the smallest sluice pieces. Gold dredge equipment usually comes in two groups, surface dredges and underwater devices. Modern day gold dredge machines enable miners to go through massive quantities of streambed material in short amount of time and locate even the tiniest pellets of precious metals. This method was very labor intensive and not very efficient. In the past, people used to apply rudimentary precious metals panning methods by sieving river dirt through mesh like trays in hopes of finding precious deposits. Alluvial deposits come in forms of loose pellets or even gold sand. Most people think that gold is found in small or large chunks directly in the ground, in actuality, sandy or gravel river banks contain large deposits of alluvial yellow precious metal.
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