What is the difference between shaft mining and open cast mining?

What is the difference between shaft mining and open cast mining?

Open cast mining is open on earth mining for minerals and shaft mining is underground mining for coal and oil.

What is the difference between open cast mining and shaft mining Class 8?

Minerals can be extracted by mining, drilling or quarrying (Fig 3.3). Minerals that lie at shallow depths are taken out by removing the surface layer; this is known as open-cast mining. Deep bores, called shafts, have to be made to reach mineral deposits that lie at great depths. This is called shaft mining.

What is the difference between open cast mining?

Open-pit mining, also known as opencast mining, is a surface mining technique that extracts minerals from an open pit in the ground. Open-pit mining is the most common method used throughout the world for mineral mining and does not require extractive methods or tunnels.

What is the difference between an open pit mine and underground mine with shafts?

Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface. In contrast, minerals that have been found underground but are difficult to retrieve due to hard rock, can be reached using a form of underground mining.

What is the difference between drilling and shaft mining?

Shaft mining, is where vertical or almost vertical tunnels are dug into the ground for access to minerals that are deposited in the ground. Drilling on the other hand, is where boreholes are made deep into the ground to access minerals that are deeply seated and mostly in liquid or gas state.

What is open cast mining and shaft meaning?

Open cast mining refers to the extraction of minerals from a shallow depth of the earth. Shaft mining refers to the extraction of minerals by constructing horizontal shafts deep within the earth.

What is the difference between shaft mining and drilling?

In which condition is open cast mining used?

Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface. It is applied to ore or rocks found at the surface because the overburden is relatively thin or the material of interest is structurally unsuitable for tunnelling (as would be the case for sand, cinder, and gravel).

Is shaft mining and underground mining same?

When the top of the excavation is the ground surface, it is referred to as a shaft; when the top of the excavation is underground, it is called a winze or a sub-shaft. Small shafts may be excavated upwards from within an existing mine as long as there is access at the bottom, in which case they are called raises.