coal reclamation

of 12 /12

Upload: tayyaba-sarfraz

Post on 22-Jan-2018




1 download

Embed Size (px)


Page 1: coal reclamation
Page 2: coal reclamation

•To search for ore or

other valuable mineralsProspecting

• determine the size, value.

• To obtain legal title.

• Sampling, mapping.


• Opening a mineral deposit

for exploitation

• Excavating overburden


• To mine out material ore

to utilize it.

• Mining or recovery of



• Protection of the


• To make it as useful for

living things as before.


Page 3: coal reclamation

During 2nd world war, to have sufficient and quick energy supply, surface mining was introduced. On the other side the underground mining was also become speedy.

After the war set off, the Industrial Revolution occurred. Then many states showed concern about environmental impacts of this mining.

Laws were made to be obeyed by miners, as well as, mine engineers to re establish land.

In 1977, SMCRA “Surface Mining Control Reclamation Act” was signed into law by President Carter on April 3rd, into law.


Lands affected by mining operations should generally be reclaimed to

Highest previous use of affected land.

State similar to surrounding terrain and natural vegetation.

The re-establishment of wildlife and aquatic habitat and resources.

Page 4: coal reclamation

The restoration of land, after being mined, as a natural or economical usable state as before it was.

The last but a major step for mining, which must be designed and made economically viable before mining (exploitation) get starts.

All existing and new mines must have closure or reclamation plans and are required to set aside in a trust, the total estimated reclamation costs.

When a mine is under construction , inspectors visit every two weeks.


The land filling of excavated area.

Making land available for any use.

Soiling, seeding and planting to make land fertile again.

Removal of all waste and gangue.

Complete and safe dispose off of gangue and refuse.

Utilization of coal mining waste.

Page 5: coal reclamation
Page 6: coal reclamation

Firstly, the land should be filled completely and compacted for any type of utilization.

Backfilling of the abandoned mines.

The reshaping of land is also important for revegetation.

Top soiling


Perennial grasses and legumes can be seeded.

Several rows of hardwood trees should be planted parallel to highwall.

Scotch pine, white pine, spruce can show growth in these lands.

After this that land might be used as residential area but it will require time span.

Wildlife can be initiated.

Roads should be constructed to have a link with city.

Page 7: coal reclamation

Subsidence : The gradual movement or sometimes abrupt collapse of the rock and soil layers into an underground coal mine, which can disturb the surface above the mine. Caving or dumping off

Leaching: The removal of materials in solution by the passage of water through soil.

Loose filled lands: the mountain top removal site is loosely filled so it got dump.

Page 8: coal reclamation


Economic impacts.

Legal problems associated with upgrading reclamation standards.

Environmental Impacts:

The effects on environment are of following types:

Land effects

Coal mine wastes.

Water pollution decrease.

Air pollution reduction.

Protection from Leaching.

Prevention from Acid mine drainage.

Page 9: coal reclamation

WASTE & TAILINGS:For the production of building materials, i.e. brickware

production. For the construction of roads and air strips. As a base material for construction of highway,

dams, irrigation, reclamation and other civil work sites.

Utilization of wastes in civil engineering. Waste heap supported by installation of concrete or

stone walls.LAND: Rehabilitation and reconstruction of

underground mine. The land can be restored for forestry, agriculture,

re vegetation. The land can be utilized as artificial lakes. It is estimated that since 2005, 60 million trees

have been planted and are thriving on a previously mined lands, a much more rapid recovery for coal-abused lands than had been expected. Though the forests haven't reached their full growth potential yet, some trees are already 30 feet tall after 10 years, similar to those growing in unmined forests.

Page 10: coal reclamation

The happy day comes when mine waste can be turned into profit cannot come soon, but until it does, it seems reasonable to use the average cost of mine waste disposal.

The economic effects are:

Reduced tax revenue.

Loss of infrastructure.

Expense of reclamation efforts.

Loss of normal revenue.

Huge sums of federal assistance were necessary to held jump start recovery efforts.

Page 11: coal reclamation

Several methods of extraction that restore land to its approximate original contour are being developed:

Truck haul back.

Block cut mining.

Haul train.

Page 12: coal reclamation

Coal Surface Mining: Impacts of Reclamation

By James E. Rowe

Reclamation, Treatment and Utilization of Coal Mining Wastes. By A.K.M. Rainbow.