You're right. Death rate is about 0.8%, to be compared to 0.02% here (40 times less). Of course, this does not account for the difference in the age distribution of workers vs the national population.
I found that whole music performance from the article very weird. It seemed disrespectful to all of the people that actually worked and supposedly died on this project.
Although on-time or early and within budget, it is still a dangerous job to do. That is 0.346% of the total workforce (2600).