Carillion Construction Canada

The job was to pour concrete into a preset base all prepared for the contractor. This was an important job as it is part developed by AECON. The company is known very well and is a large company, but they assigned inexperienced coed students for this pour and due to their lack of knowledge the whole project became a mess and we had to stop progress. Concrete can only be poured within a 90 min time limit from the time of mix. But they still went with the pour approx 2.5 hrs after initial mix. They should've sent someone who can take responsibility