October 26

I look at this and I imagine a religios mantis climbing the curvey plant I also see two colorful birds whistiling.I hear the mantis making different sounds with its arms, the whistle of the birds.The taste of the

Coal mining

1.What is the difference between surface minig and underground mining?

The difference is that surface minig like the name says it is made in the surface and underground mine is made underground.

2. What kind of machines are used in surface mining? name them.

Dragline a large machine used to remove overburden.

3.What are the tunnels in underground mining used for?

They are used for traveling throughout the mine.

4.How the conveyor velts help in the process?

It helps transporting large bolumes of material.

5.What are the three different types of mines built in underground mining?How are they use?

Slope, drift and shaft. In a slope mine a tunnel slants down from the surface to the coal seam.In drift mine they are built when the coal seam lies in the side of a hill or a mountain, also when they become to big.In shaft minig a large hole or shaft is drillid down into the ground until it reaches the coal seam.