What are the advantages of strip mining?

On a production basis, comparing fatalities per million tons, strip mines are over four times safer than underground mines; and on an exposure basis, comparing fatalities per million man hours, strip mines are approximately twice as safe. This disparity in numbers is due to the higher productivity of the strip mine.4 дек. 1971

What is strip mining describe one disadvantage?

Strip mining eliminates existing vegetation and alters the soil profile, or the natural soil layers. Mining disturbs and may even destroy the beneficial micro-organisms in the topsoil. Soil also may be damaged if reclamation operations mix the topsoil with subsoils, diluting matter in the surface soil.

Is strip mining good for the environment?

Strip mining destroys landscapes, forests and wildlife habitats at the site of the mine when trees, plants, and topsoil are cleared from the mining area. This in turn leads to soil erosion and destruction of agricultural land. When rain washes the loosened top soil into streams, sediments pollute waterways.

What are pros and cons of mining?

Top 10 Mining Pros & Cons – Summary List

What are the advantages and disadvantages of open cut mining?

1.1 Features, technical and economic indicators of open pit development

What are the 4 advantages of open-pit mining?

Advantages of open-pit mining include:

Powerful trucks and shovels can be used to move large volumes of rock. Equipment not restricted by the size of the opening you are working in. Faster production. Lower cost to mine means lower grades of ore are economic to mine.

What is the importance of stripping ratio?

A strip ratio, or stripping ratio, is an important measurement related to the open-pit mining process. It represents the amount of waste material, also known as overburden, that must be moved in order to extract a given amount of ore.

What is strip mined to yield metals?

Strip mining is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden); this activity is also referred to as overburden removal. It is most commonly used to mine coal and lignite (brown coal).

What does strip mined to yield metals mean?

What Does Strip Mining Mean? Strip mining is a mineral-extraction process in which a layer or seam of undesired material (called “overburden”) is removed from the surface of an area to allow efficient access to a desired material existing underneath the layer being stripped.

What minerals are mined in strip mining?

Surface mining accounts for two thirds of the world’s solid minerals, and is predominantly used in obtaining sand, gravel, crushed stone, phosphates, coal, copper, iron and aluminum… There are 5 main types of surface mining, which are used in various degrees and for different resources.