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All case studies

Catastrophic failureEnergy2010

Massey Energy

Massey Energy Upper Big Branch Mine Disaster

Estimated impact: 29 deaths; $210M settlement; CEO imprisoned

F14

Decision Quality Index

Critical — 5 biases detected, 2 toxic combinations

An explosion at the Upper Big Branch coal mine in West Virginia killed 29 miners. Massey Energy had accumulated 515 safety violations in the prior year. CEO Don Blankenship created a culture where production targets overrode safety protocols, and managers who raised safety concerns were transferred or fired.

Decision context

Whether to address hundreds of documented safety violations and ventilation problems at Upper Big Branch or continue prioritizing coal production volume.

Deep hindsight-stripped analysis coming soon. This case is part of our ongoing backfill to reconstruct what the platform would have flagged at decision time. The summary and bias profile below are drawn from primary sources.

Biases present in the decision

★ Authority BiasGroupthinkCognitive MiseringLoss AversionStatus Quo Bias

3D Decision Knowledge Graph

Massey Energy — 5 biases, 2 toxic combinations

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Decision

Critical

High

Medium

Toxic

Bias Intensity Profile

Severity × confidence across 5 detected biases

Toxic combinations

Yes Committee
Echo Chamber

Reference class base rates

Across all 146 curated case studies in our library:

90%

base failure rate

10%

base success rate

Lessons learned

Authority bias from CEO Blankenship created a culture where challenging safety shortcuts was career-ending
Cognitive misering by federal mine inspectors who issued citations but lacked enforcement mechanisms to shut down repeat offenders
When 515 violations in a single year don't trigger operational shutdown, the regulatory system has failed at its core purpose

Source: Governor's Independent Investigation Panel Report (2011); MSHA investigation report (2011); DOJ indictment of Don Blankenship (Post Mortem)

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Lessons learned

Authority bias from CEO Blankenship created a culture where challenging safety shortcuts was career-ending

Cognitive misering by federal mine inspectors who issued citations but lacked enforcement mechanisms to shut down repeat offenders

When 515 violations in a single year don't trigger operational shutdown, the regulatory system has failed at its core purpose