[MEDIA] 4. CHANNEL SAMPLING This method can be used in the...

4. CHANNEL SAMPLING

This method can be used in the sedimentcontained in the surface and also in anunderground mine. For shallow sediments, this method is used in a test well. Groove (channel)is made on the side of the test wells. At ahydrothermal sediment mined by underground mining systems, channels made from hangingwall to foot wall.

Application of existing methods must beaccompanied by an appropriate design. Someexamples of chip sampling and channelsampling in the field application are as follows:

4.a Channel sampling in test wells

Used for the sediment surface.



In Figure a well test is made to penetrate orebody that has positioned horizontally.

Image b) Position channel which vertical on wall of test wells.

To a precipitate surface who not homogeneous,then the channel is divided into several subchannels in accordance the condition ofmineralization.



Description: t = thick layer

K = grade ore

4.b. Channel sampling in underground mines

Channel sampling in the drift.

Channel divided by the complex geometry of thedrift top. State homogeneous mineralization.




















Channel divided by the state of mineralizationvarying between A, B, C.