Know about the dolomite mines in Arunachal Pradesh

One of the leading companies, Abhinaa Group is a conglomerate of some of the most hardworking and intelligent minds of this country. They have a pan-Indian presence with its branches spread in some major cities of India. From their period of a humble beginning in 2002, this company has maintained a strong presence in five established business sectors namely mining, construction, public health, hospitality and management. 

The mining sector is one of the largest contributions of this company. It has 2 sites of dolomite mines in Arunachal Pradesh at lease. These mines are heavily resourceful with a reserve of up to 20 million tonnes. The group has also set up plants for magnesium extraction in order to recover the magnesia from the dolomite ore. This successful operation has led to the marketing of the magnesium metal to several business spaces like fertilizers and pharmaceuticals. 

 
About the dolomite mineral - 

The dolomite is a naturally made, rock-forming minerals. Also known as a calcium, magnesium carbonate, it has a chemical composition of CaMg(Co32) and is a primary component of the sedimentary rock. It is also called dolostone, while the metamorphic rock is called dolomitic marble. Limestone also contains dolomitic limestone. 

Mostly found in the modern sedimentary environment, these rocks are extensive geographically and can be hundreds to thousand feet thick. The rocks which were rich in dolomite got deposited as calcium carbonate mud. Pos deposition, the pore water which is rich in magnesium alters/transforms it to dolomite again. 

 
The uses of dolomite - 

Used majorly as a source of magnesium metal and of magnesia, it forms an essential constituent of the refractory bricks. One often uses dolostone as an alternative for limestone and also as an aggregate for both cement and bitumen mixes. Nowadays the use of dolomite as a flux in blast furnaces has increased manifold. This is mostly because it causes less environmental contamination. 

 
The dolomite / graphite mines in Arunachal Pradesh - 

Arunachal Pradesh is one of the largest states in the north eastern region of the country. The state has a heavy potential of natural resources, although some of it is being exploited unsystematically and unscientifically. The mineral wealth of the state being quite impressive, this place is a host to a large number of both metallic and non-metallic minerals. One of them is Dolomite. 

The deposits of limestone and dolomite are found in different stratigraphic locations of this hill region such as near Hubli in Dibang district, Tidding in Lohit district, near Pangin in East Siang district and others. The Estimated reserves in these areas have been calculated to be 140 million tonnes in Tidding, 13.35 million tonnes in Hubli etc. It is largely used for a different range of manufacturing and industrial purposes all over the country. 

 
The graphite mines in Arunachal Pradesh - 

This company owns large stores of graphite reserves. This is put to use for a variety of purposes, ranging from pencil leads to refactors, steel manufacturing to batteries and brake linings. Many nuclear and steel plants use graphite electrodes. India falls among the top five graphite producing nations in the world. The estimated total reserves of graphite in this country are almost 11 million tonnes.



  

What Are The Methods Of Mining In Order To Create Sand Blocks In West Bengal

For the construction of building and roads and create the sand blocks in west bengal, sand is being extracted from the rivers in West Bengal. For the construction industry, the companies are dredging the rivers in order to get impure free and good quality sands. There are some of the methods of extraction of sand. These are off-channel mining and in-stream mining.

In-stream Mining

In order to lower the cost of transportation of the sand, the in-stream sand mining is often done in locations which are along the route of the transportation or close to the end markets. This type of mining is extremely damaging to the aquatic ecosystem and properties. While the flow of sediment can get hamper by the over dredging of the streams, the channels can change its course. Hence, within the sustainable limits, one can do the mining activities without harming nature. There are few recommendations which are as follows -

• Setting an elevation below which the mining is not allowed
• On the basis of annual replacement levels, one should not permit a mining scale.
• There should be a long term monitoring mechanism.
• Limiting extraction methods to bar skimming
• Between May And September, one needs to limit the mining activities

Off Channel Mining

In changing the alluvial system, floodplain extraction or off- channel mining of river sand is done. As the meandering rivers flow across the flood plains, under this system it forms a possibility that the river channel would move towards the pit. This is a situation in which the river flows through the area left between the pit and river and is known as river capture. There are some recommendations, which can lessen the harm caused by off-channel mining.

• The the walk of the channel, one should keep the maximum depth of the pit.
• Away from the main channel, the off-channel extraction should be done.
• One needs to set up a long run monitoring mechanism.
• In order to provide the brought back to support the wetland habitat, pits should be redeemed for agriculture.
• In the long term, one should establish proper responsibility and accountability.

Mining Process Of Dolomite

There is a various process of dolomite mining, which is being practiced in the dolomite minesin arunachal pradesh.They are the removal of soil and vegetation layer, cruising and blasting of dolomite and transportation.

Conclusion: The sand and dolomite mining is one of the most profitable types of mining. To know more one can go the “Abhinna Group“ and check details.