Green Mining

Green Mining for PTBA is to put in front for environment sustainability and community interest in production activities, in handling production threats and in future production planning preparation. Environment is an integrated part within whole mining cycle and part of mine closing plan.


Whole Company activities is preceded by EIA to identity potential environmental impact and to put plan for monitoring and managing the impacts. Based on the characteristics and scale of the activiety, there are EIA and Environmental Managing/Monitoring Plan (known as RKL/RPL in Indonesia) for great area and more significant environmental impacts. For small area and less significant ones Environmental Managing/Monitoring Efforts (UKL/UPL) is required.


PTBA Green Mining starts with comprehensive plan concerning about environmental sustainability since the beginning. Mining activities plan final purpose is to manage post mining, not only to get as much coal as possible.


1. Environment Management

Company has executed sustainable mining activities to environment and community. To measure mining activities effectiveness, Company sets parameters and indicators annually refers to applied regulation. In this case is South Sumatra Governor Decree No. 17 year 2005 and No. 8 year 2012 about meeting the Environmental Standards. Any environmental program executed is required to be evaluated and monitored by related parameters with the main effects occurred due to the mining activities. The environmental indicators are annually evaluated in environmental management forum as ISO 14001 Environmental Management System, then the environmental effects from mining operational activities are controllable.

2. Environmental Monitoring

Periodically environmental monitoring in surroundings mine area is done to minimize potential environmental degradation, as part of environmental risks mitigate efforts. Company monitoring action has 14 (fourteen) activities. They are water quality monitoring, air quality monitoring, soil quality monitoring, soil degradation check, run off check, wild animals monitoring, in water plants and animals monitoring in surroundings mining area. This routine activities has shown than Company meets all environmental standard parameters. Furthermore, there are progress in nature quality in surroundings and within mining

  1. Biodiversity monitoring (plankton, benton, nekton) done by independent third party in water catchment area where Company operate in Tanjung Enim, South Sumatra shown generally improved and can support life for creatures live in water.

  2. Wild animals monitoring shown that post mining rehabilitated and reclamation area can support wild animals life. In several locations are founded birds which are rare and rized as endangered species refer to list in Indonesia Government Regulation No. 7 year 1999 about Nature and Animals Protection. The animals are big wings eagle (Accipiter virgatus), eagle bat (Macheiramphus alcinus), meninting king prawn (Alcedo meninting) and stone frog (Lacedo pulchella). Furthermore, there were mammalian like black apes, small apes and reptile like cobras.

  3. Reclamation monitoring shown that overall mining activities are well managed, with reclamation plant growth rate above 80%.

  4. Socio-economic and cultural monitoring shown that overall environmental management and monitoring activities was adequate with environmental management and monitoring in EIA. From socio-economic and cultural perspective, community perception to Company activities is very good, and give full support for the mining activities implemented.

3. Environmental Research and Development

To protect environment within operational area, Company has done several research and studies. It is part of evaluation process for environmental conditions within mining area and its surroundings and also for future environment potential development. The research and studies are:

  1. Mining water recycle implementation to freshwater in Air Laya Mining.

  2. 12 hectares agro-forestry pilot project in Air Laya postmining area, partnership with PT. Perhutani (on progress).

  3. 3 years partnership for toxic waste management (transfering and proceessing) with Ministry of Environmental certified company.

  4. 50 hectares urban forest development on Air Laya post mining area.

  5. 100 hectares educational forest development partnership with Bogor Agriculture University (IPB) on Endikat and MTS post mining areas (on progress).

  6. 93 hectares water catchment areas rehabilitation in National Army District Command II/Sriwijaya public facility, 260 hectares Semendo Darat Tengah (SDT) and 100 hectares in Mulak Ulu (on progress).

  7. Continue the 100 hectares in Sembilang National forest tecnical rehabilitation plan, 260 hectares in SDT and 100 hectares in Mulak Ulu (on progress).

  8. Set environmental management and biodiversity system information (on progress).

  9. Mining water processing with rock acidity test, partnership with Bandung Technology University (ITB). (on progress).


PTBA is committed to develop post mining areas with responsible managed, through reclamation process, planted areas and post mining. Company implements this mandate as in applied regulation and take stakeholders participation on doing it. The post mining aim is to create benefit from post mining area for various purpose of Company stakeholders.

Company has executed various post mining reclamation and rehabilitation programs. It is completely finished from mining activities and inline with "post mining is part of mining plan" and "reclamation is investment to utilize post mining land" principles.

Based on above principles, Company has done reclamation in all managed areas, temporary and permanently. In area that still have long term prospect, Company do periodically reclamation with pioneer plants and land cover to maintain the land fertility. Temporary reclamation areas generally are back filled post mining areas and top soil deposit areas.

For areas with no long term prospect and called as final area, like Ombilin mine, Company has impelemented permanent reclamation.


Enim Great Forest is one of post mining area utilization form besides as a planted forest. It is established on 5,460 hectares on Air Laya and West Banko permitted post mining. It was consisted of 3 development mining blocks, 696 hectares are for protection, 2,508 hectares are for biodiversity (plant collection) and 2,346 hectares are for utilization. It was designed for land utilization in 12 zones, they are;

  1. Recreational / Acceptance Zone.

  2. Facilities Zone

  3. Planted Forest Zone

  4. Biodiversity Zone

  5. Fruits Garden Zone

  6. Farming Zone

  7. Water Recreation Zone

  8. Productivity Research Zone

  9. Agriculture / Agro-Forestry Zone

  10. Fishery Zone

  11. Camping Area Zone

  12. Animals Zone

Company has finished several activities on Great Enim Forest establishment. They are:

  1. In utilization zone, processing white woods extract into white woods oil.

  2. In acceptance zone, utilization of sports facilities by local community (futsal, golf, bowling, sports centre)

  3. Seed development from seed bank in Endikat and Tapuan Hill.

  4. Land utilization for SRI pady rice in Food Security event.



E and clearance and reclamation process of the Company’s mining areas have been conducted in accordance with provisions of Law No. 4 of 2009 and Regulation of Minister No. 18 of 2008 concerning Reclamation and Mine Closure which include:

  1. Gradual land clearance.

  2. Landscaping for final used mine (water flow scheme, back slope, overlaying top soil).

  3. Erosion control (check dump, rip rap and sedimentation pools)

  4. Land revegetation (cover crops and annual crops).

  5. B3 wastes management (incinerators, shipment of B3 wastes to third parties).

  6. Acid mine drainage control.

  7. Maintenance of plants and environmental facilities.

  8. Utilization of eucalyptus plants to be processed into eucalyptus oil, raw materials are taken from postmining reclamation areas.

Based on these principles, the Company realizes revegetation programs in its entire permanent and temporary managed areas. In areas with long-term prospects, the Company conducts routine revegetation programs by planting pioneer and cover crops to maintain soil fertility. Areas with temporary vegetation activity are generally areas with backfilled mining and topsoil stockpiling.

As for areas without long-term mining prospects or final areas, the Company implements rehabilitation and revegetation programs such as development of Kandi Hill Nature Tourism Area, Urban Forest, Education Forest and TAHURA (People’s Forest Park) Enim. Besides revegetation activities in its managed areas, the Company also participates in watershed rehabilitation programs.

The Company has realized various reclamation/rehabilitation programs for former mine lands that are completely free from mining operations in line with the principles that “Mining is a part of mine closure plan” and“Reclamation is investment for utilizing used mine lands.”



The Company uses mine water to spray coals in stockpile and activity areas to reduce dusts and for public toilets in the field and operational office.

The Company makes efforts to improve water quality in the surrounding areas of its activities. One of the efforts being made to improve water quality is acid mine water treatment (AAT) in mud sedimentation pool either actively by adding calcium or passively by wetland method. Wetland method is done by utilizing plant species which absorb metal that is proved to be successful in reducing metal contents, particularly Fe and Mn, so that water quality meets environmental quality standards (BML) before discharged into public waters.

To maintain availability of surface water and sustainability of water resources, the Company also performs water resources conservation through several activities, including:

  1. Utilization of mine water for watering roads and production facilities.

  2. Utilization of rainwater for washing heavy equipment.

  3. Use of water with closed loop system.

  4. Making water ponds for water conservation and biopore holes at office and residential areas.

  5. B3 wastes management (incinerators, shipment of B3 wastes to third parties).

  6. Acid mine drainage control.

  7. Maintenance of plants and environmental facilities.

  8. Utilization of eucalyptus plants to be processed into eucalyptus oil, raw materials are taken from postmining reclamation areas.

The purpose of these efforts is for all water used in supporting process of the Company’s mining activities can be recycled and returned to public waters in good and usable condition, in accordance with the laws and regulations.

In meeting the needs of clean water, the Company also performs water treatment for mine water. Capacity of the water treatment installation is 350 m3 per day. The purpose is to reduce river water volume taken for clean water needs and to reuse and recycle mine water as waste water into clean water.

With the aforementioned actions, the Company participates in maintaining and preserving the use of surface water sources. Monitoring effect of water which is returned to public waters to biodiversity is also routinely erformed. The results show no negative effects of waste water on biodiversity. Result of aquatic biota monitoring conducted by a third party (PPLH UNSRI) shows that the water surrounding the Company’s activity locations in Tanjung Enim is not much contaminated.