A senior geologist whose optimistic but flawed assessments were endorsed by politicians and dam officials, leading to the dismissal of accurate warnings and contributing to the tragedy.
Semenza's engineering warnings clash with Dal Piaz's geological assessments, creating professional tension.
Merlin actively denounces the establishment's blind trust in Dal Piaz over accurate safety analysis.
Pancini and other officials rely on Dal Piaz's reports to justify continuing construction.
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