For cutting solid cylindrical soil sample.
Steel tube with cutting edges at lower end.
An engraved index line ensures consistent volume of sample with tommy bar, size 500 x 50 mm
Set of 2 landform models, each includes an overlay representing ancient mountain forms that can be removed and compared with the base model to show changes millions of years later.
Cross section shows basic mountain types, volcanic fault block, glaciated domes and folded mountains with lesson plan, size 45 x 60 cm.
Shows mining when any ore body lies at a considerable distance below the surface.
The specific mining method selected depends upon the size, shape and orientation of the ore body and the depth involved.
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