What analysis can be done about this blast? What is the good and bad ?

The video shows an overburden blast in an Open pit mine. The high speed camera allows us to see how holes are performing during the blast.

1. What do you think of the blast?
2. What is good and bad about this blast?
3. Some holes are showing higher ejections compared to other holes, why?

Please share your thoughts how this blast can be improved in the future.

Source of video: Jules Voight