Feds Fine Businesses Over 6 Deaths at Dairy Farm
A sign stands at Prospect Ranch outside of Prospect Valley Dairy east of Keenesburg, Colo., Aug. 21, 2025. (Chris Bolin/Denver Post via AP, File)
UPDATE Feb. 25, 2026, 1:40 PM CST
Federal workplace safety officials have issued penalties against three companies following the deaths of six workers at a Colorado dairy farm who were exposed to toxic hydrogen sulfide gas after a manure pipe came loose inside an enclosed area.
The US Occupational Safety and Health Administration (OSHA) announced proposed fines totaling $246,609 against the dairy’s owner and two contractors involved in work on the farm’s manure management system, according to the Associated Press.
The Aug. 20, 2025 tragedy, which killed five adult men and a teenage boy, stunned rural communities around Keenesburg, about 35 miles northeast of Denver.
The dairy owner, Prospect Ranch, faces the largest proposed penalty—$132,406—for serious safety violations. OSHA cited failures in worker training, safety planning, and protection from hazardous air conditions.
William Field, a Purdue University professor who tracks confined-space deaths in agriculture, said the fines are relatively high for the farming sector but not unprecedented. He noted that OSHA penalties are often reduced on appeal or partially offset if companies invest in safety improvements. Still, he said potential civil liability from lawsuits typically carries far greater financial consequences.
Nov. 1, 2025, 12:30 PM CDT
Authorities confirmed that all six people who died at the Colorado dairy were killed by exposure to hydrogen sulfide gas, based on autopsies and toxicology tests conducted by the Weld County coroner’s office.
Emergency responders had entered a confined space at the industrial-scale dairy near Keenesburg to recover the victims’ bodies after the Aug. 20 incident. Officials had immediately suspected toxic gas exposure.
The coroner’s findings contribute to an ongoing federal workplace safety investigation into the incident at the California-based Prospect Ranch operation and the role of a dairy equipment contractor. Both the company and federal regulators have released few details about the failure, but confined-space hazards on farms and dairies are widely recognized as a persistent cause of agricultural deaths in the United States.
All six victims were Latino men aged 17 to 50. Four—including the teenage high school student—belonged to the same extended family.
“People are in shock,” said the Rev. Thomas Kuffel of Catholic churches in Keenesburg. “Those in the ranching and dairy community understand the work is hard and accidents happen, but it’s usually one or two people. This is very different.”
First responders from a rural Weld County fire district were dispatched to Prospect Ranch around 6 p.m. on Aug. 20. Among those killed were Alejandro Espinoza Cruz of Nunn; his 17-year-old son, Oscar Espinoza Leos; and another son, Carlos Espinoza Prado, 29, of Evans.
The Espinoza family is related by marriage to another victim, Jorge Sanchez Pena, 36, of Greeley, according to the Weld County coroner’s office. The remaining victims were Ricardo Gomez Galvan, 40, and Noe Montañez Casañas, 32, both of Keenesburg.
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