Search results
Results From The WOW.Com Content Network
Longshore drift from longshore current is a geological process that consists of the transportation of sediments (clay, silt, pebbles, sand, shingle, shells) along a coast parallel to the shoreline, which is dependent on the angle of incoming wave direction. Oblique incoming wind squeezes water along the coast, generating a water current that ...
A mining simulator is a type of simulation used for entertainment as well as in training purposes for mining companies. These simulators replicate elements of real-world mining operations on surrounding screens displaying three-dimensional imagery , motion platforms , and scale models of typical and atypical mining environments and machinery.
Sand pit along the Mississippi River, United States Artificial lake with frac sand dredger. Sand mining is the extraction of sand, mainly through an open pit (or sand pit) [1] [failed verification] [2] but sometimes mined from beaches and inland dunes or dredged from ocean and river beds. [3]
There are two principal phases of underground mining: development mining and production mining. Development mining is composed of excavation almost entirely in (non-valuable) waste rock in order to gain access to the orebody. There are six steps in development mining: remove previously blasted material (muck out round), scaling (removing any unstable slabs of rock hanging from the roof and ...
Phillips began a new mine, south of the Book Cliff Mine in Coal Mesa, which he hoped would produce a mine with unlimited potential. The prospect mine failed and the only choice he had was to tunnel through 700 feet (210 m) of sandstone (beneath the original Book Cliff Mine) into the vein at a lower, workable level.
The most commonly used explosives in mining today are ANFO based blends due to lower cost than dynamite. Before the advent of tunnel boring machines (TBMs), drilling and blasting was the only economical way of excavating long tunnels through hard rock, where digging is not possible.
Cliff diving is the leaping off a cliff edge, usually into a body of water, as a form of sport. It may be done as part of the sport of coastal exploration [ 1 ] or as a standalone activity. Particular variations on cliff jumping may specify the angle of entry into the water or the inclusion or exclusion of human-made platforms or other equipment.
A clear indication of a lack of activity at a dead cliff is a covering of vegetation that appears on the cliff as wave action against it subsides. Well-known coasts with living cliffs in Germany are the Red Cliff ( Rote Kliff ) in Kampen on the island of Sylt or the chalk cliffs on the Jasmund Peninsula.