Who gains from saving nature
Ledger 1 : 33 — For each dollar financing nature-based solutions in 2023, about $33 financed activities harmful to nature. (UNEP)
Cases / Cyanide spill · Turkey · 2021–2026

Çöpler (İliç) heap leach collapse

Nature's voice · report
In 2024 an expert panel found that some values in my soil exceeded the limits.
Did nature suffer? Yes. Harm is on record. Disputed
Recorded
  • The same panel found exceedances in my groundwater and surface water, and in my air. Medyascope
  • In 2022 cyanide leaked from the same heap onto me: 20 m³ was declared and 210 m³ was calculated by an expert. Medyascope
People
  • 9 people died.
    Workers killed in the heap collapse on 13 February 2024.
What the record lacks: 5 none on record · 4 disputed See the gaps
Accounts of the harm differ
How much cyanide solution leaked in 2022?
  • Company or project The company and the governorate: The leak was 20 m³. Medyascope
  • Researchers Expert at the court site inspection: The leak was 210 m³. Medyascope
  • Press and investigations Medyascope: The ministry accepted the company's declaration even on the leak volume. Medyascope

On 13 February 2024 a heap of ore being leached with cyanide slid at the Çöpler gold mine in İliç, Turkey, and nine workers died. A criminal trial of 43 defendants is ongoing, and in 2026 the majority owner sold its 80% stake to Cengiz Holding.

9Workers killed in the heap collapse
13 February 2024; trial of 43 defendants ongoing, no verdict.

Status As of October 2026: the trial of 43 defendants continues with no verdict, adjourned to 11 November 2026 (another entry gives 20 October 2026).

What?
A heap of cyanide-leached ore slid at the Çöpler gold mine on 13 February 2024, killing nine workers; a criminal trial of 43 defendants is ongoing. NTV
Where?
Çöpler mine, İliç, Erzincan, Turkey, in the Euphrates basin.
When?
13 February 2024; trial ongoing, next hearing 11 November 2026. NTV
Who?
Gained
  • SSR Mining — Sold its 80% stake in Çöpler to Cengiz Holding for about $1.49 billion in cash (announced March 2026). Mining.com
  • Cengiz Holding — Acquired the 80% stake; its third capacity increase is before the EIA commission. SSR Mining
Lost
  • Nine workers and their families — The nine workers died in the collapse. Evrensel
Harmed
  • Soil, groundwater, surface water and air at İliç — Exceedances in some values reported by an expert panel in May 2024. Medyascope
Why?
The trial is examining negligence; an expert report found fault with the officials who approved the EIA; the cause of the slide not on record. NTV
How?
The heap of about 10 million m³ of ore being leached with cyanide slid, trapping nine workers.
6 of 6 questions answered from the record

What happened

The record, in order.

The Çöpler gold mine at İliç, in Erzincan province, is operated by Anagold. SSR Mining held 80% and Lidya Madencilik, part of Çalık Holding, held 20%. In 2022 a slide and a cyanide leak occurred on the same heap. The governorate and the company declared the leak at 20 m³; an expert at a court site inspection calculated 210 m³. the sources reviewed record that a fine was issued and the plant was briefly stopped.

On 13 February 2024 a heap of about 10 million m³ of ore, being leached with cyanide, slid. Nine workers were trapped under it, and their bodies could not be reached for months. An expert panel later reported exceedances of some values in soil, groundwater, surface water and air. According to that panel, as reported by Medyascope, the environmental impact assessment (EIA) had been approved even though limit values were exceeded.

The EIA approval for the mine's second capacity increase carries the signature of the then environment minister, Murat Kurum, dated 7 October 2021. In 2024 Kurum said, as reported, that the ministry does not decide capacity and that the EIA only examines environmental impacts.

The criminal case is before the Erzincan 1st High Criminal Court with 43 defendants, charged with causing the death and injury of several people through negligence and polluting the environment through negligence. An expert report found the public officials who approved the EIA at fault. At the seventh hearing in April 2026, victims' lawyers showed that an expert had a commercial relationship with the mining company; the court requested a new report and postponed the hearing to 11 November 2026. No verdict has been given.

SSR Mining agreed in March 2026 to sell its 80% stake to Cengiz Holding for about $1.49 billion in cash; SSR's release on the completed sale is dated June 2026. On 24 July 2026 the ministry, with Kurum again as minister, issued the mine a one-year temporary operating certificate. Cengiz's request for a third capacity increase is before the EIA commission, and annulment applications have been filed against the certificate.

  1. 20217 October: EIA approval for the second capacity increase signed by then environment minister Murat Kurum
  2. 2022Slide and cyanide leak on the same heap; volume declared at 20 m³, calculated by a court expert at 210 m³
  3. 202413 February: heap slides, nine workers killed; May: expert panel reports exceedances in soil, water and air
  4. 2026March: SSR Mining agrees to sell 80% to Cengiz Holding for about $1.49bn; April: seventh hearing, expert's commercial tie to the company raised; 24 July: one-year temporary operating certificate; trial adjourned to 11 November

What was said

Claims, in the words of those who made them.

Where accounts differ

Each party's account, side by side, with its source. The record does not settle these points; it shows them.

How much cyanide solution leaked in 2022?
Company or project
The company and the governorate

The leak was 20 m³.

Medyascope
Researchers
Expert at the court site inspection

The leak was 210 m³.

Medyascope
Press and investigations
Medyascope

The ministry accepted the company's declaration even on the leak volume.

Medyascope
Who is responsible for the capacity increase and the EIA approval?
Government and regulators
Murat Kurum, then environment minister

The ministry does not decide capacity; the EIA only examines environmental impacts (paraphrase, 2024).

Researchers
Expert report in the criminal case

The public officials who approved the EIA were at fault.

NTV
Press and investigations
İlhan Cihaner, former Erzincan chief prosecutor

There was bribery and EIA manipulation in the Çöpler licence (his statement; no conviction recorded).

bianet
Was an expert in the case independent of the mining company?
Communities and civil society
Victims' lawyers

At the seventh hearing (April 2026) they showed that an expert had a commercial relationship with the mining company.

NTV
Courts
Erzincan 1st High Criminal Court

Requested a new expert report and postponed the hearing to 11 November 2026.

NTV

How it looked

What was shown, beside what was recorded.

Shown

  • The cyanide leak in 2022 was 20 m³.
    The governorate and the company (as reported by Medyascope) · Medyascope

Recorded

  • A court-site expert calculated the 2022 cyanide leak at 210 m³, not 20 m³.
  • Medyascope reported that the ministry accepted the company's declaration even on the volume of the 2022 leak.
  • An expert panel found exceedances of some values in soil, groundwater, surface water and air (May 2024).
  • According to the expert panel, as reported by Medyascope, the EIA approval was given despite exceedances of limit values.
  • Nine workers died in the heap collapse on 13 February 2024.
  • Trial: 43 defendants before the Erzincan 1st High Criminal Court; an expert report found the officials who approved the EIA at fault; hearing adjourned to 11 November 2026.
  • The ministry issued a one-year temporary operating certificate on 24 July 2026.
  • After the collapse a journalist was investigated under the disinformation provision (the sources reviewed).

Who gained

Money that reached nature, beside money that stayed elsewhere.

Reached nature or the ground

Not published
No figure published.

Gained elsewhere

Not totalled
Currency: USD · Window: 2026. All figures cover the same period. * Estimate built from cited figures.

Responses on record

  • tr-environment-ministry (2024): Murat Kurum said in 2024 that the ministry does not decide capacity and that the EIA only examines environmental impacts (paraphrase from the sources reviewed).

In court and with insurers

Every proceeding and every insurer decision on record.

Lawsuits and rulings

  1. Ongoing
    Çöpler heap collapse criminal trial
    Erzincan 1st High Criminal Court · Criminal · Prosecution and victims' families → 43 accused (charged)

    The 43 defendants are charged with causing the death and injury of several people through negligence and with polluting the environment through negligence. They are accused and no verdict has been given. The seventh hearing was held in April 2026 and the case was adjourned to 11 November 2026. NTV

  2. 2026–Ongoing
    Annulment applications against the temporary operating certificate
    Not specified in the sources reviewed · Administrative · Not specified in the sources reviewed → The ministry that issued the certificate

    the sources reviewed record annulment applications against the one-year temporary operating certificate issued on 24 July 2026.

Insurers

No insurer decision on record.

What nature saw

Outcomes measured on the ground, and nature's note.

Nature's report opens this page. Below: further outcomes measured on the ground.

Heap that slid
~10 million m³
Ore heap leached with cyanide, 13 February 2024
2022 cyanide leak
20 m³ vs 210 m³
Declared by governorate and company vs calculated by a court-site expert
Expert panel, May 2024
Exceedances
In some values for soil, groundwater, surface water and air

What we don't know

Undisclosed, unproven, untried: recorded as data.

Nature

  • Disputed How much cyanide solution leaked in 2022?

Accounts

  • Disputed Who is responsible for the capacity increase and the EIA approval?
  • Disputed Was an expert in the case independent of the mining company?

Record

  • None on record the sources reviewed give two dates for the next hearing: 11 November 2026 (NTV and the sources reviewed) and 20 October 2026 (an earlier entry); the 11 November date is used because it appears in the NTV headline and in the detailed entry.
  • None on record The measured values and the sites sampled in the May 2024 expert panel report are not on record.
  • None on record A network of 181 accounts denied the leak and discredited a person who opposed the mine; a link to the company was not proven (Medyascope, March 2024).
  • None on record Former Erzincan chief prosecutor İlhan Cihaner said there was bribery and EIA manipulation in the Çöpler licence; no conviction on this is recorded.
  • Disputed Expert reports on the 2024 collapse are described in the sources reviewed as conflicting; the details are not on record.
  • None on record Amount of compensation to victims' families: not on record.

Did the harm stop?

The ministry issued a one-year temporary operating certificate on 24 July 2026; the sources reviewed does not record completion of any clean-up.

Who paid?

The nine workers who died and their families; the sources reviewed give no compensation figures.

Sources

Voices on record: ✓ Company or project— Government and regulators— Courts✓ Press and investigations— Communities and civil society— Researchers

Company or project

Connected cases

Related matters, and cases linked to this one through the same organisations, with the role each played in both.

Science and environment

Cyanide (in gold mining)
A highly toxic chemical used to dissolve gold from ore.
Groundwater
Water held underground in soil and rock, drawn through wells.

Law and courts

Negligence and gross negligence
Negligence is a failure to take reasonable care. Gross negligence is a serious, reckless failure; under US oil-spill law a finding of gross negligence raises the maximum penalty.