Colorado Dairy Tragedy Leads to Fines for Businesses

OSHA penalizes dairy owner and contractors over 6 worker deaths from toxic gas exposure

Published on Feb. 25, 2026

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Federal workplace safety regulators have penalized three businesses 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 U.S. Occupational Safety and Health Administration announced proposed fines totaling $246,609 against the dairy owner and two contractors working on the manure management system.

Why it matters

The hazards of confined spaces on farms and dairies are a well-known and persistent cause of death in agriculture across the U.S. - often from exposure to odorless and colorless noxious gases, or due to asphyxiation in closed spaces where oxygen has been depleted. This tragedy highlights the need for better worker safety protocols and training in the agricultural industry.

The details

The deaths of five men and a teenager on Aug. 20, 2025 occurred after a manure pipe disconnected, releasing highly toxic hydrogen sulfide gas in an enclosed space at the Prospect Ranch dairy in Keenesburg, Colorado. OSHA cited the dairy owner Prospect Ranch LLC for $132,406 in fines for failures in training, planning and protecting workers from atmospheric hazards. Contractor Fiske Inc., which employed four of the victims, faces $99,306 in penalties for failing to protect employees and provide hydrogen sulfide detection training. Another contractor, HD Builders, was cited $14,897 for lacking a written hazard communication program and worker training.

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

The players

Prospect Ranch LLC

The dairy owner that faces the largest fine of $132,406 for serious violations related to the incident.

Fiske Inc.

A Colorado-based contractor that services dairy equipment and employed four of the workers who died. Fiske faces $99,306 in penalties for failing to protect employees and provide hydrogen sulfide detection training.

HD Builders

A contractor that was cited $14,897 for failing to have a written hazard communication program and provide training on detecting hydrogen sulfide.

Alejandro Espinoza Cruz

One of the victims, found dead along with his 17-year-old son Oscar Espinoza Leos and 29-year-old son Carlos Espinoza Prado.

Jorge Sanchez Pena

A 36-year-old victim from Greeley who was related by marriage to the Espinoza family.

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What they’re saying

“We have cooperated with the investigation proceedings to date. While we disagree with the findings and are reviewing our options to determine next steps, we are focused on doing what is in our power to ensure that a tragedy like this never happens again.”

— Kevin Fiske, Owner, Fiske Inc. (wral.com)

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 tragedy highlights the persistent dangers of confined spaces and noxious gases on farms and dairies, underscoring the critical need for robust worker safety protocols, training, and oversight to prevent such devastating incidents in the future.