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
denis-greek [22]
3 years ago
5

Hydraulic mining was a mining technique first used in 1853. In this type of mining, high-pressured jets of water were used to ex

tract silver and gold from the Earth. Which of the following best explains why the practice was discontinued?
History
2 answers:
erma4kov [3.2K]3 years ago
8 0

Answer: Hydraulic mining was incorporated earlier for gold and silver mining, in which the extremely high pressure water jets are used to remove the overlying rocks in order to obtain economic minerals.

This use of hydraulic mining has been terminated for the following reasons such as-

  1. It reduces the soil fertility, thereby making it unsuitable for agricultural purpose.
  2. Rapid erosion takes place due to the extreme force exerted by the water.
  3. It released a lot of harmful elements such as cyanide, arsenic and other acids that are harmful to living creatures.
  4. An extremely huge amount of water is needed to operate this type of mining.
  5. The harmful elements that are released gets percolated down and contaminates the groundwater.
marishachu [46]3 years ago
6 0

<span>Hydraulic mining, or hydraulicking, is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment. In the placer mining of gold or tin, the resulting water-sediment slurry is directed through sluice boxes to remove the gold. It is also used in mining kaolin and coal.</span>

<span>HOPE THIS HELPES </span>

You might be interested in
12. What events caused the United States to declare war?
valentina_108 [34]
The Taxed and the Government
5 0
3 years ago
Read 2 more answers
What happened to the American Indians who fought in the French and Indian War?
Ksenya-84 [330]

Answer: The war was fought primarily between the colonies of Great Britain and New France, with both sides supported by forces from Europe as well as American Indian allies.  

3 0
3 years ago
Read 2 more answers
The speech barbara jordan gave at richard nixon's impeachment hearing "helped lead to nixon's resignation over the watergate sca
Mazyrski [523]

Two years later, Barbara Jordan was asked to deliver a keynote address at the Democratic National Convention in 1976.

Barbara Jordan was an American lawyer, educator and politician. She was also a leader of the Civil Rights Movement. She achieved international fame for her brillant speech during the impeachment process of President Richard Nixon.

Called the 'gentlelady from Texas', Barbara Jordan spoke on the evening of July, 12, 1976 at Madison Square Garden in New York City. She delivered the most significant speech of the Convention. It provided the economical statement of the Democratic Party's philosophy and a vivid reflection of the mood in post-Watergate America. Her speech also illustrated the character, quality and potential of the black female as a national political figure. She was acclaimed for her warmth, integrity, eloquence and her confidence in creating a united, strong and fair country.

8 0
3 years ago
How did industrialization increase the speed of change
SIZIF [17.4K]
Industrialization drastically increased the speed of change because the production of new goods always had to increase and be faster at the end of the day. The demand was ever-increasing which made change much more desirable when it was in the direction of increased production. 

In this way industrialization increased the speed of change. 
8 0
3 years ago
What Stephen A. Douglas wanted?
bonufazy [111]

Answer:

He wanted a nice blowy bery satisfying

4 0
2 years ago
Read 2 more answers
Other questions:
  • The national government has three types of _____ powers that have been granted to it in the constituion
    15·1 answer
  • . BLANK a professional soldier hired to serve in a foreign army​
    11·1 answer
  • HELP I SUCK AT ESSAYS AND THIS IS WORTH 50 POINTS!!
    9·1 answer
  • Differences between the north and south during the civil war slideshow
    11·1 answer
  • Many archaeologists believe that Native Americans came to North America from ________ by crossing the Bering Strait.
    15·2 answers
  • Go to this page and answer this question<br><br> https://brainly.com/question/19052501
    7·2 answers
  • On what date did the attack on Pearl Harbor occur?
    8·1 answer
  • True or False: Small pox and measles were two diseases that affected workers on the Panama Canal.
    14·1 answer
  • Match the following terms with the appropriate definition.
    7·2 answers
  • 1 1.3.2 quiz: specialization
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!