In fact the providers didn't follow the procedure established by contract, which required them to measure the actual size of the ancient tunnels instead of rely

In fact the providers didn't follow the procedure established by contract, which required them to measure the actual size of the ancient tunnels instead of relying on standard measures (which by law were required to be established following modern standards; they knew they would not be valid for the actual project, that's why they asked for an investigation to find out the actual size needed). [1] The delay is not caused by any mistake, despite what the press and politicians said; it's being caused by the established security protocols being followed (for one) to avoid a catastrophe (which has happened in the recent past for not being followed). 1 - https://twitter.com/unodelarenfe/status/1623588179520413696?s=20 https://twitter.com/unodelarenfe/status/1623588179520413696?...