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.
Shows coastal and mountain terrain in natural colour relief & cross section diagram of the substance of a typical volcano.
Complete with lesson plan, size 60 x 45 cm
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
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