Wow - 25,000+ igniters of 3 types? That's a lot.
Yea. 60k Ft of detcord, 10k blasting caps, 20k fuses, 20k igniters, etc and only 360 bricks, 180 lbs of sheet explosive? That says explosive training.
Ditto the small amount of linear charges. Under 300 feet? That's not a lot. For a residential door, yea, ok, you only need six to twelve inches. But for reinforced doors or breaching a wall, you essentially outline the breaching area. That's like 22 feet just for one entrance (7x2 on sides, 4x2 wide)
Wouldn't it be more cost effective just to beat them when they screw up instead of going all James Bond dramatic and blasting bits off?
No. Fuses, igniters and blasting caps are individually cheap. During training, you use inert explosive analogs for most of the training. You crimp a couple dozen blasting caps with clay before you get to do it with C4. Ditto with detcord. You practice laying it and doing dry runs.
Using flour instead of explosives makes life interesting, as it can be highly flammable under the right circumstances. Done properly, it looks like a micro nuclear explosion.