Colorado Dairy Fined Over 6 Worker Deaths

Federal regulators cite safety failures after toxic gas exposure kills 5 men and a teenager

Published on Feb. 25, 2026

Got story updates? Submit your updates here. ›

Federal workplace safety regulators have fined three businesses a total of $246,609 over their failure to protect six Colorado dairy workers who were killed by exposure to highly toxic hydrogen sulfide gas after a manure pipe disconnected in an enclosed space. The deaths of the five men and one teenager in August 2025 shocked the rural communities around Keenesburg, northeast of Denver.

Why it matters

The hazards of confined spaces on farms and dairies are a persistent cause of death in the agriculture industry, often due to exposure to noxious gases or asphyxiation. This incident highlights the need for better safety protocols and training to protect workers in these high-risk environments.

The details

The U.S. Occupational Safety and Health Administration (OSHA) cited dairy owner Prospect Ranch LLC with the largest fine of $132,406 for serious violations, including failures in training, planning and protecting workers from 'atmospheric hazards.' OSHA also fined Colorado-based contractor Fiske Inc. $99,306 for failing to protect employees and provide hydrogen sulfide detection training. A third contractor, HD Builders, was cited $14,897 for not having a written hazard communication program and failing to provide training on detecting hydrogen sulfide.

  • The incident occurred on August 20, 2025.
  • OSHA announced the proposed fines on February 25, 2026.

The players

Prospect Ranch LLC

The dairy farm owner, fined $132,406 by OSHA for serious safety violations.

Fiske Inc.

A Colorado-based contractor hired to work on the manure management system, fined $99,306 by OSHA for failing to protect employees and provide hydrogen sulfide detection training.

HD Builders

A contractor cited $14,897 by OSHA for not having a written hazard communication program and failing to provide training on detecting hydrogen sulfide.

Alejandro Espinoza Cruz

One of the victims, found dead along with his two sons.

Jorge Sanchez Pena

One of the victims, related by marriage to the Espinoza family.

Got photos? Submit your photos here. ›

What’s next

The companies have 15 days to comply with proposed penalties, request an informal conference with safety regulators or challenge the findings before an occupation safety review commission.

The takeaway

This tragic incident underscores the critical need for improved safety protocols and training in the agricultural industry, particularly when it comes to the hazards of confined spaces and exposure to toxic gases. Regulators must continue to hold employers accountable and ensure workers are properly protected.