Conventional Signs

Description

Open pit mining often results in a large hole or pit being formed in the process of extracting a mineral. Deposits mined by open pit techniques are generally divided into horizontal layers called benches. The thickness of the benches depends on the type of deposit & the mineral being mined. Mining is generally conducted on a number of levels at any one time.

Description

For investigation of geographical and geological features. Eight landform models join to form a continuous model showing the mountains, lakes, rivers, deserts, glaciers, coastlines, cayons and cultural point, with lesson plan, size 90 x 90 cm.

Description

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.

Description

Shows various stages through which the earth was formed