On the morning of 15 June 2005, fourteen men went to work in a depillaring panel at Central Saunda Colliery in Jharkhand and never came home. A roof fall in the goaf opened a path for a huge volume of water from abandoned workings above, and the inrush overwhelmed the men underground. Twelve loaders, an overman and a mining sirdar died.
A Court of Inquiry examined what happened, and its report is one of the best teaching documents in Indian mining safety. It deals with almost everything a mining student has to learn: depillaring, water danger, permission conditions, plans, supervision, inspections and the role of the safety organisation. This post summarises the main findings and the lessons in plain language.
Please note: this is a summary for education, prepared from a published summary of the Court's report. For legal or detailed purposes, always refer to the original report. We have described persons by their roles rather than names, out of respect, and because the lessons are about systems, not individuals.
The disaster at a glance
| Mine | Central Saunda Colliery, Central Coalfields Limited (CCL), South Karanpura Coalfield |
| Date | Early hours of 15 June 2005 (the third shift that started on 14 June 2005) |
| Type | Inundation in a depillaring (caving) panel, Bansgarha seam, Panel No. 11 |
| Source of water | Waterlogged abandoned workings of the overlying Hathidari seam, about 26 m above |
| Fatalities | 14 (12 loaders, an overman and a mining sirdar) |
| Inquiry | Court of Inquiry under Section 24 of the Mines Act, 1952, set up on 17 October 2005 |
| Court | Chairman: a retired IAS officer and former Secretary, Ministry of Labour and Employment; two assessors: a retired DGMS officer and a trade union leader |
The mine and its geology
Central Saunda Colliery lies in the central part of the South Karanpura Coalfield, about 5 km from Patratu railway station and 75 km from Ranchi. It is one of the nine mines of the Barka-Sayal Area. Before nationalisation it was owned by a private company. At the time of the accident, 832 people were on its rolls, including 12 overmen and 24 mining sirdars.
Two districts were working. One was a development district in the Bansgarha 'C' seam, which lay 56 m below the Bansgarha seam and about 750 m away from Panel No. 11. The other was Panel No. 11 in the Bansgarha seam, which was being depillared by caving. Output was about 120 tonnes a day from development and 100 tonnes a day from depillaring.
The key geological facts:
- The Bansgarha seam was 4.9 m thick, degree II gassy and dipping at about 1 in 5. It was worked through inclines 17, 18 and 25.
- The Hathidari seam lay about 26 m above the Bansgarha seam. Its workings had been caved, stowed or left standing on pillars, and they were connected to the seams above.
- The immediate roof of the panel was shale, followed by sandstone.
- A fault with a throw of 1 to 8 m ran through the Hathidari seam over Panel No. 11.
- Several higher seams had already been worked, some abandoned because of fire.
In other words, the panel was working below a heavily worked-out, waterlogged and faulted overburden, and the permission to depillar it came with conditions designed to manage exactly that risk.
What happened
| Time | Event |
|---|---|
| 14 June, midnight | The third shift starts under the charge of one overman. There was no under-manager or assistant manager in this shift. The overman engaged 45 persons, 15 of them in Panel No. 11. Three loaders did time-rated jobs, and 12 loaded blasted coal by hand under one mining sirdar. |
| About 6:30 am | The shotfirer leaves the district. |
| 7:15 am | Two pump khalasis leave the mine after speaking to the overman by phone at the 27th level of Panel No. 11. |
| 7:30 am | One of the khalasis, at the 8th level, hears a loud sound from the main dip, followed by a gust of air and a cloud of dust. He is pushed forward by the air but is not injured. |
Rescue and recovery
- The Agent informed the General Manager, senior officials, DGMS and the Ramgarh Rescue Station.
- The rescue team arrived at about 11 am and searched for survivors, but none could be found.
- A control room was set up. Senior CCL officials and DGMS officers arrived.
- De-watering began at 4 pm. Because there was not enough space in No. 18 incline for delivery ranges, two boreholes were drilled from the surface.
- Divers of the Indian Navy were requisitioned and reached the mine on 18 June.
- All operations were conducted under rescue cover. All 14 bodies were recovered by 19 June 2005.
- De-watering continued to find where the water had come in, but it was stopped at the 28th level because conditions had become unsafe. Traces of carbon monoxide were found below the 27th level as the goaf got exposed, so the water level was allowed to rise to the 26th level to stop the release of CO.
Compensation
Compensation under company rules was paid immediately to the nominees. In addition, an ex-gratia payment of Rs 2 lakh was sanctioned by the Ministry of Coal for each victim, with Rs 5 lakh each from the Group Personnel Insurance, and one dependant of each victim was given employment.
The central argument: air-blast or inrush of water?
The Court heard evidence from 47 persons, including management, DGMS officers, mine officials, trade union leaders and representatives of the Coal Mines Officers' Association of India. The big question was what actually killed the men.
| View | Held by | Main argument |
|---|---|---|
| Air-blast from the roof fall | Mine management, the officers' associations, a committee set up by CCL | The Hathidari seam above was dry. The air-blast from the roof fall killed the men instantly, and water flowed in afterwards. |
| Inrush of water | High Power Committee (Ministry of Coal), DGMS, trade unions | The Hathidari seam held accumulated water, which rushed in with the roof fall and drowned the men. |
The water in the Hathidari seam
The management side said water had come out of a 10 cm borehole drilled into the Hathidari seam for about four months, but later only a 3 cm stream flowed, which they described as ordinary strata water, and they concluded the seam was dry. The High Power Committee, DGMS and unions disagreed. They said the borehole was very old and probably jammed, which reduced the flow, and the seam was not fully dry. A fault with a throw of about 6.8 m just above Panel No. 11 divided the Hathidari workings into two parts, and the borehole was connected to only one of the water bodies. About 11.45 million gallons of water rushed into the Bansgarha workings, which is roughly 52,000 cubic metres if imperial gallons are meant. That included water from the second body and possibly from other overlying seams.
Why the Court rejected the air-blast theory
- The assumption that the Hathidari seam was dry was wrong. It was not free of water.
- The police inquest reports mentioned no external injuries on the victims, except in one case, and attributed the deaths to being submerged under water and mud.
- The post-mortems were done mechanically. They were carried out at the company hospital by six doctors, but, as cross-examination revealed, the dissection was done mechanically by Class IV employees and the doctors could not answer the Court's questions on medical jurisprudence. So the stated cause of death (shock and haemorrhage from hard, blunt injuries) could not be accepted.
- There was no dislodgement of supports and no damage to property. Even the pump khalasi was not injured, and there was no other tell-tale sign of an air-blast.
- The area of roof exposed at the time of the roof fall was not large enough to cause a high-magnitude air-blast.
The Court also described the CCL committee's conclusion, which blamed the air-blast and suggested it might have been an "Act of God", as a case of fitting evidence to a conclusion that had already been decided, and did not accept it. One member of that committee had himself said that further scientific investigation was needed.
How did the water get in?
The DGMS inquiry pinpointed the intersection of a fault plane and a geologically disturbed area. The disposition of muck and boulders supported this. In all probability, water from the overlying seams found its way down through this plane of weakness after the roof fall.
The inquiries also found that Panel No. 11 had been worked beyond the area permitted by DGMS, which was confirmed by the plans. Extending the workings beyond the permitted area exposed the weak fault plane, and that contributed to the roof fall and the inundation that followed.
What the High Power Committee and DGMS concluded
- The management made no systematic or scientific effort to de-water the upper seams, as the depillaring permission required.
- The DGMS statutory inquiry said the accident could have been averted if (i) the goaves of the overlying seams lying vertically above and within 60 m of the panel had been kept free of water throughout the depillaring, as required by a condition of the permission letter, (ii) the area outside the panel had not been worked in contravention of another condition of that letter, and (iii) the position of the panel boundary fault, with its throw and direction, had been marked on the plan as required by the regulations then in force.
The Court's conclusions
The Court concluded that the cause of the accident was the connection created between the working district of the Bansgarha seam and the overlying waterlogged, abandoned workings of the Hathidari seam, caused by a fall of roof.
The accident occurred because the Hathidari seam, lying above and within 60 m of the Bansgarha working district, was not made free of water as the DGMS permission (granted under Regulation 100(1) of the Coal Mines Regulations, 1957) required. In addition, extraction beyond the permitted area in Panel No. 11 and the exposure of the fault plane contributed to the roof fall and the inundation.
Responsibility
The Court held a number of people responsible. We describe them here by role:
- The General Manager (deemed Agent) and the Project Officer (Agent) were held responsible for extraction in Panel No. 11 in contravention of the conditions of the DGMS permission.
- The Manager was held responsible for the same contravention and for failing to ensure the safety of the mine as the regulations required.
- The Safety Officer was held responsible for not reporting to the Manager that the Act, regulations and rules were not being followed, and for not promoting safe practices.
- The Assistant Manager and general shift in-charge was held responsible for failing to ensure that all work under his charge followed the law.
- A Deputy Director of Mines Safety had inspected the mine five times between March and June 2005 but did not point out the contraventions of the permission conditions. He relied on the management's statement that the Hathidari seam had been de-watered through a borehole and did not verify it. The Court said he should have been more careful.
The Court's recommendations
- DGMS should create a comprehensive, scientific system of inspection so that subjective judgement is reduced as far as possible.
- Officers and supervisory staff should receive proper, regular training so they understand the statutory provisions and their own duties.
- The strength of DGMS officers and staff appeared grossly inadequate, and the government should act quickly to strengthen the organisation.
- Mine managements should have a clear policy for regular recruitment of statutory manpower, so that there is never a shortage.
- The government may consider increasing compensation paid to families of accident victims.
- In big companies like CCL, two or three directors may be nominated as owners of different mines so that safety matters can be handled effectively.
- The Internal Safety Organisation (ISO) had not been very effective. It could be more purposeful if (a) work in a new district began only after clearance from the ISO, and (b) the head of the ISO sat on the company board or reported to a director not directly connected with production.
The Court also remarked that the accident was due to the negligence of the General Manager, the Agent and other officials, and that its entire expenses could be recovered from CCL's management.
Lessons every mining professional should take away
- Permission conditions are legal conditions. A depillaring permission is not a formality. Every condition, such as keeping overlying goaves free of water within a set distance, must be complied with and verified.
- Never work outside the permitted area. Doing so can expose weak ground, faults and old workings.
- Water above you is as dangerous as water around you. Abandoned, waterlogged workings above a panel are a standing hazard. Know where they are, how much water they hold and how it is being drained.
- Do not rely on a single borehole as proof of a dry seam. The Court found the borehole was probably old and jammed, and the seam was divided by a fault into separate water bodies.
- Mark faults on plans. The position, throw and direction of faults near a panel must be shown on the statutory plans.
- Supervision must be real in every shift. A third shift with 45 people under one overman and no senior officer on duty is a warning sign.
- Inspectors must verify, not just accept. Statements from management should be checked on the ground.
- Investigations should follow the evidence. The Court rejected a conclusion that fitted a pre-decided story and instead relied on plans, depositions and cross-examination.
- Safety organisations need independence and authority. The ISO should be able to say "no" to starting work in a district.
Why this case matters for exams
Questions on mine disasters, inundation precautions, water danger plans and depillaring conditions turn up regularly in Overman, Sirdar and DGMS papers. Remember these anchor points: Central Saunda Colliery, 2005, 14 deaths, inundation, Hathidari seam 26 m above the Bansgarha seam, 60 m rule for overlying goaves, Court of Inquiry under Section 24 of the Mines Act. Note that the report refers to the Coal Mines Regulations, 1957. The current regulations are the Coal Mines Regulations, 2017, whose numbering is different, so use the current text for compliance and for current exam questions.
Quick quiz
- A. Methane explosion
- B. Connection between the working panel and overlying waterlogged abandoned workings after a roof fall
- C. Fire in the lower seam
- D. Failure of the winding rope
Show Answer
- A. 8
- B. 11
- C. 14
- D. 19
Show Answer
- A. 10 m
- B. 30 m
- C. 45 m
- D. 60 m
Show Answer
- A. Section 24
- B. Section 21
- C. Section 46
- D. Section 57
Show Answer
- A. Kurse
- B. Hathidari
- C. Lower Semana
- D. Upper Nakari
Show Answer
Frequently asked questions
Was the Central Saunda disaster an air-blast or an inundation?
The Court concluded it was an inundation. The men died from the sudden inrush of water from the overlying Hathidari seam, and the Court did not accept the air-blast theory.
Who conducted the inquiry?
A Court of Inquiry under Section 24 of the Mines Act, 1952, headed by a retired senior government officer with two assessors. A High Power Committee set up by the Ministry of Coal and a DGMS statutory inquiry also examined the accident.
What was the most important rule that was not followed?
The condition in the DGMS permission requiring the goaves of overlying seams within 60 m of the panel to be kept free of water, along with working outside the permitted area.
Does this report still matter today?
Yes. It is a standard case study in water danger and depillaring. The regulation numbers have changed, but the lessons about permissions, plans, supervision and inspection are as relevant as ever.
Disclaimer: this post is a summary for education and exam preparation, based on a published summary of the Court of Inquiry report. It does not replace the original report. We remember the 14 miners who lost their lives and offer our condolences to their families.
0 Comments