Large scale tree plantation in and around the mining areas.
The success in land reclamation of mines spoils and afforestation has been very significant and overwhelming in places like Ashoka, Piparwar etc. The mined out areas or the de-coaled area is refilled with overburden at places where no mining is required in future. The OB fills and dumps are not very conducive to growth of plants, since these sites do not contain adequate plant nutrients. The dumped soil is improved in stages through modern techniques to bring back its fertility and the horticultural operations are carried out by adding nutrients, like organic, inorganic and bio­fertilizers.
Bio-reclamation of degraded mined areas of more than 4300 Ha (since 1992) of different types of land like OB dumps, subsided areas, mined out areas, colonies, avenues etc.
The total plantation done in CCL since 1992 is more than 66 lakhs, covering all the mining areas of CCL. During last 7 years the plantation done is more than 34 lakhs which itself is a positive indication of improvement in bio-diversity and environment.

Plantation at Ashok OCP of CCL
 

Plantation on Backfilled area of Piparwar OCP of CCL

Migratory bird finding shelter at Piparwar OCP

Regular air, water and noise monitoring by CMPDI to keep a check on the adverse parameters, if any.
All the mines / washeries of CCL are being monitored on regular basis by CMPDI. Every quarter there are about 175 Ambient Air Quality sampling, 185 water quality sampling and 150 noise survey being done by CMPDI. In case of any, adverse parameters reported immediate action is taken by the areas / projects for amelioration.

Remote Sensing Survey for analysis for land use improvement in large mines.
The large producing mines are being monitored for land reclamation by Remote Sensing techniques through CMPDI on annual basis. The mines like Piparwar and Ashoka are being monitored since last 4 years and it can be seen from the analysis that the reclamation / a forestation has increased from 198 Ha to 225 ha ie. an increase of about 14% in 2 years. The mines being monitored are Ashoka, Piparwar, KDH, Parej and Rajrappa OCPs.

MAP SHOWING THE REMOTE SENSING IMAGERY OF PIPARWAR OCP 2006

MAP SHOWING THE REMOTE SENSING IMAGERY OF PIPARWAR OCP 2008

Provision for water sprinkling by 28 KL tankers In all its Open cast mines haul roads and others.
The total no of mobile water sprinklers in CCL are 44 of capacity 28KL each and two 60 KL each. Besides these there are 4 converted water sprinklers of 28 KL. In addition to these the projects are enhancing the water sprinkling through engagement of contractual water tankers

Filling of abandoned mine voids by fly ash and reclamation thereafter.
CCL has undertaken filling of some of its abandoned mine voids by fly ash from BTPS, CTPS, BPSCL, DLF etc.
 

Provision of dust extractors and wet drilling in all mines / units.
CCL is having a total of 116 drill machines wherein the NVE dust extractors are fitted in all the machines and are working. In order to improve the environment further CCL has planned to replace this with the provision of wet drilling in all the drill machines. At present CCL has already converted 4 drilling m/c with wet drilling arrangement and 6 is in progress and the is expected to be completed very soon. CCL has planned to convert all the drilling M/cs with wet drilling arrangement within 6 months in a phased manner.

Suitable type of nozzle, water spray systems have been installed in CHPs, Feeder breakers, Coal transfer points, crushers etc. of mines and Washeries.

Static Sprinkler at RCM siding of Piparwar Area of CCL

Controlled blasting / planning of colonies / habitation away from the mines as far as possible.
CCL is using NONEL type detonators for controlled blasting and minimum impact of dust and vibration.

Provision of closed water recirculation arrangement in all washeries.
The closed water recirculation system has stopped the effluent discharge from the washeries. Besides this arrangements of water sprinkling in coal transfer points, good housekeeping and plantation etc is being done in the washeries for overall improvement.

Pollution control through effluent treatment plants / domestic treatment plants / oil grease traps etc.
There are 17 mines having ETPs (Oil & Grease Traps)and 4 mines are having Sewage Treatment Plants.

STP at KDH OCP of CCL – A view

Rain Water harvesting at 5 mining areas.
There are six mines equipped with Rain Water Harvesting (RWH) facilities

Rain water h

Rain water harvesting at Piparwar OCP of N K Coalfields

Water Treatment Plants in areas for providing clean drinking water.
CCL is having a total of 12 water treatment plants spread over the mining area. There are 77 pressure filters plants and 75 deep bore holes for clean supply of domestic water.

Development of water bodies / lagoons in mining areas for sedimentation of fines as well for improvement of aquatic life.

Lagoon at Piparwar OCP of CCL

Mines and one washery are having ISO 14001 – 2004 Environmental Management System and CCL is underway for obtaining certification for 4 more mines / units.

The mines already having ISO Certification

The Regional Repair Shops (RRS)(Workshops) / Hospital having ISO 9001-2008 certification are:

It is expected that by the year end the ISO certification of further 4 mines (given below) will be completed.

CCL has planned that by 2013-14 all the mines producing more than 1 MT, all the washeries and Central Hospital, Naisarai will be ISO 9001:2008 & ISO 14001:2004 certified units.