1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Sav [38]
4 years ago
7

Explain how hard rock mining works

Geography
2 answers:
Misha Larkins [42]4 years ago
7 0

<span>Hard Rock mining works when a narrow horizontal vein orebody will be mined by room and pillar or a longwall method whereas a vertical narrow vein orebody will be mined by an open stoping or cut and fill method. However, there are further consideration needed for the strength of the ore as well as the surrounding rock. In addition an orebody hosted in strong self-supporting rock may be mined by an open stoping method while an orebody hosted in poor rock may need to be mined by a cut and fill method were the void is continuosly filled as the ore is removed. </span>

Katarina [22]4 years ago
3 0

Hard rock mining requires removing ore from other substances such as quartz. Ores have different qualities and impurities depending on how they were formed. Often gold occurs as veins in quartz, which is mined as rocks from within a mine. This requires special machinery and often requires the skills of a geologist

You might be interested in
In Suriname, the most common languages spoken are A. Italian or Greek. B. English, Dutch, or Surinamese. C. French, Spanish, or
dexar [7]
B, English, Dutch and "Surinamese" which is an umbrella term describing Javanese and other regional languages.
4 0
4 years ago
Read 2 more answers
2. When we look at a map of the natural hazards for the USA, we can affirm that ___
IRINA_888 [86]

Answer:

The correct answer is B

Explanation:

A. Earthquakes in the United States are much more likely to occur in the Midwestern portions and the east coasts.

Wrong. You can think about the San Andreas Fault, the 1906 San Francisco Earthquake, the 1989 World Series Earthquake in the Bay Area. All of them were in the western coast.

B. The western portion is dominated by geological events, whereas the Great Plains and eastern portions are dominated by atmospheric events.

True

Western portion: Geologial events, like earthquakes, as i said in a

Great plains: Lots of tornados in the summer

Eastern portion: Hurricanes in the summer(south), snowstorms, nor'easters in the winter(north).

C. The heaviest population centers are in the Midwest and western mountainous portions

Along the coasts(NY, LA).

D. The eastern coasts are dominated by the largest occurrence of tornadoes.

That is the Midwest.

E. The path of most hurricanes is from the southwest and all the way to the Rocky Mountains.

No, usually in the south.

3 0
3 years ago
How is they death valley different from other valleys
Ilia_Sergeevich [38]

Answer:

Death Valley is known for extremes: It is North America's driest and hottest spot (with fewer than two inches/five centimeters of rainfall annually and a record high of 134°F), and has the lowest elevation on the continent—282 feet below sea level.

Explanation:

According to https://www.nationalgeographic.com/travel/national-parks/death-valley-national-park/

7 0
3 years ago
As viewed from earth which direction is Mars moving along this path
mafiozo [28]

That is, Mars appears to move fromwest to east from one night to the next. Every two years or so, there are a couple of months when Mars' position from night to night seems to change direction and move east to west.

4 0
4 years ago
How did Egypt and kush work together in positive way?
castortr0y [4]
<span>After the rule of Ramses II, Egypt’s government collapsed. Rival leaders in different cities were so busy fighting one another that they forgot about maintaining Egypt’s control of Kush. This was a costly oversight. Left on its own, Kush became an independent kingdom ruled by Nubian kings.</span>
6 0
3 years ago
Other questions:
  • What is the third longest river in the world?
    9·1 answer
  • Which of the following is a direct effect of tectonic plate movement?
    11·1 answer
  • Which of these four religions claim the smallest number of adherents, a)Christianity, b) Hinduism, c) Judaism, d)Buddhism
    14·1 answer
  • Which country did not ever have a
    15·1 answer
  • Grasslands, such as the prairies of north america,
    6·1 answer
  • What routes should be used to go from Seattle Washington to vernal Utah
    12·1 answer
  • Which type of movement of Earth's crust caused these layers of rock to
    7·1 answer
  • How many language's speak in India.​
    9·2 answers
  • How had america changed during its first century
    11·1 answer
  • L-Panuto:Basahin ang mga lipon ng mga salita sa Hanay A at hanapin sa Hanay B ang maaaring
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!