Mineral Products

Mining, Overburden Removal, Quarrying, Drilling and Blasting and allied services:

  • Miningis the process of digging things out of the ground. Any material that cannot be grown must be minedMining things from the ground is called extraction. Mining is done by scraping away the soil (dirt) from the top of the ground. This is called surface mining. Mining can include extraction of metals and minerals, like coal, diamond, gold, silver, platinum, copper, tin and iron. In our company, we used to mine mostly Coal/ Lignite, Iron Minerals.
  • Quarrying is the process of removing rock, sand, gravel or other minerals from the ground in order to use them to produce materials for construction or other uses. So, a quarry is any such working on the surface of the earth where minerals are extracted. Quarries are also known by other names around the world: ‘surface mine’, ‘pit’, ‘and open pit ‘or ’opencast mine’.
  • Drilling and blasting is the controlled use of explosives and other methods. It is practiced most often in mining, quarrying and civil engineering such as dam, tunnel or road construction. The result of rock blasting is often known as a rock cut. For mining to extract the coal blasting mostly done by departmental by supplying blasting materials.

I. Method of Lignite Mining:

The mining operations by opencast mining method, are carried out using conventional mining machinery like hydraulic excavators/hydraulic shovels and dumpers for OB/IB removal including hard strata, and excavation & loading of lignite in to consumer’s trucks or dumpers/trucks of other agency from mines working face. Entire mining operations inclusive of all ancillary activities are to be carried out by the contractor selected through tendering process. The entire topsoil excavated from the mining area will be stacked separately or spread over the reclaimed area.

II. Definition of Work:

Turnkey Mining Contract involving Overburden/ Inter burden removal, Excavation and/or Loading of Lignite from mines face:

Work of Lignite Mining, Loading and Dispatch into consumer trucks/dumpers and/or dumpers/trucks of contractor itself and/or trucks/dumpers of other contractor leading to stack yard which includes excavation, transportation for all lead & lift and unloading of OB/IB including Hard Strata up to dump, dozing, spreading, leveling, dust suppression, road formation including spreading of kankari if available within lease hold area, excavation and loading of lignite in to consumer trucks/ dumper from mines face, loading/unloading of lignite from trucks/dumpers in case of excess/shortage (Vadh-Ghat) in desired tonnage of lignite to be loaded in Trucks/dumpers and related ancillary activities requires to be carried out under turnkey mining contract.
Overburden (OB)

Lignite being sedimentary in nature occurs either in a single layer or in multiple layers at various depths. Opencast mining method to win this lignite involves excavation of the entire overlying materials up-to the depth of lignite formation in the proposed area. The materials lying above first layer of lignite in the proposed area is termed as Overburden (OB). For the purpose of this tender, the OB materials chiefly constitute top soil, silica sand, sandstone, clay, hard compact clay, hard strata, shale and material already dumped on surface/ground surface etc.

Inter-burden (IB)
Exposed Lignite
Lignite Dump Area