# Pozo Emilio mining death legal proceedings

> Live situation record from CLSTR: https://clstr.news/situations/pozo-emilio-mining-death-legal-proceedings
> Updated: 2026-10-01T17:24:28.000Z. Sources: 7. Developments: 2.

The Provincial Court of León upheld the acquittal of 16 defendants regarding the 2013 Pozo Emilio mine tragedy in Valle, where a methane gas leak caused the asphyxiation of six miners. 

The court rejected an appeal from the Prosecutor’s Office, maintaining a previous ruling that cleared former company president Antonio del Valle, former vice president Arturo del Valle, and various directors and safety supervisors of homicide, serious injury, and crimes against workers’ rights. While the prosecution argued the accident was preventable due to failures in risk prevention regulations, the court maintained the decision to acquit.

## Timeline

### 2026-10-01: León court closes case against former Ambi president after death

The Provincial Court of León has closed the criminal case against former Ambi president José Antonio Fierro following his death, ending charges of labor rights violations and sexual harassment.

5 sources. https://clstr.news/cluster/len-court-closes-case-against-former-ambi-president-after-death

### 2026-09-30: León court upholds acquittal of 16 in Pozo Emilio mining deaths

The Provincial Court of León has confirmed the acquittal of 16 individuals accused of responsibility for the 2013 deaths of six miners due to a methane gas leak at the Pozo Emilio mine.

2 sources. https://clstr.news/cluster/len-court-upholds-acquittal-of-16-in-pozo-emilio-mining-deaths

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Cite as: Pozo Emilio mining death legal proceedings. CLSTR, https://clstr.news/situations/pozo-emilio-mining-death-legal-proceedings