The main costs overruns that occured with Galore were the huge jump in material costs ( steel, iron, cement etc. ) that occured during its construction phase that were grossly underestimated in the FS. The manhours of construction were also underestimated. These were the two biggest factors that contributed to the halting of the Galore project.

Cost inflation of materials is one of the biggest concerns the construction industry faces today and is something that is no longer easy to predict going forward. ( Part of the reason for this is the central banks printing of money starting in 08 after the financial crisis and continuing today )

Imho, part of the delay is because of Teck wanting to find a partner or partners to spread the risk in acquiring this district. After Galore, midsized mining companies like Teck can no longer afford the risk in going the project alone by themselves. As I posted before, imo, Teck will not opt to take the 75% due to these risks. Most likely they are in talks with other partners to take us out completely. The opportune time is now imo. If they wanted to take a backin percentage, they would have already decided that long ago as they have had all the info on SC for quite some time now.