[consultancies, engineering] ARX Group SA — one of Switzerland's premier engineering consultancies, with 25+ offices in 17+ countries, known for iconic projects including the Ceneri Base Tunnel and dozens of USTRA/SBB federal infrastructure contracts. The exposed material includes: <redacted> <redacted> 9,510 project fee structures with internal/external billing rates for every engineer — the complete pricing intelligence for one of Switzerland's largest infrastructure consultancies. <redacted> <redacted> 8 GB of Ceneri Base Tunnel documentation — as-built engineering records for Swiss national critical infrastructure. 881,205 time entries spanning years of daily work activity for every employee, with task descriptions and project assignments.