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Hybrid mining techniquescombine certain aspects of surface and underground mining. Highwall mining is a hybrid technique used in combination with the surface mining of coal. In this technique, miners use special push beams or push carsto drive a drilling device called a cutterhead into the wall of a previously mined furrow. The mined coal is transferred from the cutterhead for recovery. This creates a tunnel as wide as the cutterhead that can reach more than 1000 feet (300 meters) long. Experts consider highwall mining a hybrid technique because although the coal is mined from underground, no workers enter the underground area.
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Which types of vehicles use gas as well as electricity for their power?
Hybrid powered vehicles use both gasoline and electricity for propulsion.
Where can you find obsidian in minecraft pe?
In the full version of Minecraft, obsidain is usually found in the deep part of caves. Since there are no cave systems in minecraft pe, it's really hard to find it. You just have to keep on mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining and mining until you luckily find obsidian.
Price of a hybrid?
Depends on what Hybrid you get, a Prius Hybrid costs different than a Lexus Hybrid...
What are types of minning?
The types of mining are shaft mining, strip mining, surface mining, and subsurface mining.
What types of minnings are there?
The types of mining are shaft mining, strip mining, surface mining, and subsurface mining.
Distinguish between Data mining and text mining?
mining the data is called data mining. Mining the text is called text mining
What is an AWD hybrid?
a AWD Hybrid is a 4 wheel drive Hybrid
What Industries in desert region?
I OH NO
What kind of mining is done in peru?
All types of mining from copper mining to gold mining to zinc mining.
What are the different kinds of mining?
The three types of mining -strip mining,open pit mining,and shaft mining
What hybrid cars does Toyota sell in the US?
Toyota has 3 hybrid vehicles, the Prius, a Camry hybrid and a Highlander hybrid.
What are the different types of mines?
THERE ARE DIFFERENT TYPES OF MINING SUCH AS SURFACE MINING,open cast mining, strip mining,alluvial mining,quarrying mining,underground mining,and drilling
