Trav's short answer
Blackbird Mountain Guides faces $151,300 in proposed penalties after Cal/OSHA investigated the deadly February avalanche near Castle Peak.The agency alleges seven workplace-safety violations, including failures connected to travel in avalanche terrain when the danger rating was high. The company has appealed the citations, says it operated within applicable requirements and disputes Cal/OSHA's conclusions.
The latest development
Cal/OSHA proposes $151,300 in penalties against Blackbird Mountain Guides
The citations followed a Cal/OSHA inspection opened after the 17 February 2026 accident in the Castle Peak area near Truckee, California.
The central allegation: Cal/OSHA says the company failed to use effective procedures to keep guides away from avalanche terrain after the regional danger rating rose to high on the morning of the accident.
Among the proposed penalties is an $81,000 willful-serious accident-related citation. Regulators also issued other serious and general citations involving hazard assessment, training, protective equipment, fatality reporting and the company's written safety programmes.
The key numbers in the Castle Peak case
Cal/OSHA inspection · August 2026The $151,300 figure represents proposed penalties. Blackbird Mountain Guides has appealed the citations, so the case remains contested and the final outcome may change.
What regulators allege
Cal/OSHA says guides were exposed to avalanche terrain during a high-danger day
The most serious part of the case centres on the conditions on 17 February. Cal/OSHA says Blackbird did not implement effective procedures to address what it described as an imminent avalanche hazard and did not ensure exposed employees stayed out of, near or below avalanche terrain until conditions were corrected.
Another serious accident-related citation says the company did not effectively identify and anticipate the risks of guided travel after the Sierra Avalanche Center raised the avalanche danger from considerable to high. The agency also raised concerns about combining two guided groups during the exit.
$81,000
A willful-serious accident-related citation tied to the company's injury and illness prevention procedures and the alleged exposure of guides to an imminent avalanche hazard.
Training and equipment
Cal/OSHA also cited alleged shortcomings involving risk-management training, emergency-response coordination and assessment of protective equipment for avalanche terrain.
The agency separately proposed a $5,000 penalty over the timing of reporting the deaths of the three guides and a $500 penalty relating to a written heat-illness prevention plan required for outdoor employees.
The February avalanche
Nine people died while returning from a guided backcountry ski trip
The avalanche struck on 17 February 2026 in the Castle Peak area of the Sierra Nevada, near Truckee. The group was returning from a three-day backcountry ski trip during a powerful winter storm.
The victims included three Blackbird guides and six clients. Reporting on the investigation says 15 people were travelling together when the avalanche hit. The event has been described by authorities and news organisations as California's deadliest modern avalanche.
The deaths of the clients are central to the wider tragedy, but the workplace-safety case examines whether Blackbird met its legal obligations to protect its employees.
Blackbird's response
Blackbird Mountain Guides disputes the citations and has filed an appeal
Blackbird says the citations do not accurately reflect the realities of professional mountain guiding or the safety programme it had in place. The company says it believes it operated in compliance with applicable regulatory requirements and according to established guiding-industry safety frameworks.
The company has also stressed the experience and qualifications of the three guides who died. Its founder, Zeb Blais, has said the guides approached their work with care and professionalism and that wilderness guiding takes place in rapidly changing environments.
Formal appeal filed
Blackbird is contesting Cal/OSHA's conclusions, meaning the proposed penalties are not the final word on the workplace-safety case.
Separate report released
Blackbird published an independent investigation by veteran avalanche professional Don Sharaf on 9 August, shortly before the Cal/OSHA citations were issued.
That independent report reviewed weather information, guide records, GPS tracks and witness material. Its existence does not override the Cal/OSHA case, but it forms part of Blackbird's account of how the accident unfolded.
What happens next?
The citations are under appeal while other investigations remain open
The federal OSHA inspection database lists the Blackbird Mountain Guides inspection as an open case. The company received the citations after the inspection's closing conference on 12 August.
Separate criminal inquiries have also been reported. Cal/OSHA's Bureau of Investigations, which reviews workplace deaths for possible criminal referrals, has an investigation open, while the Nevada County Sheriff's Office previously forwarded its investigation to the district attorney for review.
For skiers and guides, the case is likely to draw wider attention because it sits at the difficult intersection of professional duty, avalanche forecasting, changing mountain conditions and the legal responsibilities of employers operating in inherently hazardous terrain.
Trav's final summary
The $151,300 penalties are significant, but the case is not finished
Cal/OSHA has proposed $151,300 in penalties against Blackbird Mountain Guides after the Castle Peak avalanche that killed nine people. The agency alleges serious workplace-safety failures, including shortcomings in hazard assessment, procedures, training and protective-equipment evaluation.
- Seven alleged violations: the Cal/OSHA case includes serious claims connected to the February accident and other workplace requirements.
- Appeal underway: Blackbird disputes the citations and says it complied with applicable requirements and professional guiding standards.
- Still developing: the workplace case remains open and separate investigations have also been reported.