Earth Science
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Earth Science
Open Pit Mine Model
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.
B19058 -
Earth Science
Rocks Collection
A comprehensive collection of igneous, metamorphic and sedimentary rocks, in wooden box, with partitioned tray containing 50 specimens, each nominally numbered and enclosed in a transparent plastics bag. Specimens may be removed from bags for detailed examination. Each specimen is also labeled on the inside of the box lid, indicating the geological name.
B19101 -
Earth Science
Minerals Collection
A quality collection of minerals, in wooden box, with partitioned tray containing 30 specimens, each numbered and enclosed in transparent plastics bag. Specimens may be removed from bags for detailed examination. Each specimen is labeled also on the inside of the box lid, indicating the geological name.
B19110 -
Earth Science
Tube Sedimentator
Simply shake the self-contained, heavy-duty transparent plastic tube and watch as the dust settles! Because it is filled with pebbles, sand, silt and water, the particles gradually settle in layers, thus demonstrating sediment deposition in rivers, streams and lakes. Includes manual.
B19140
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