[quimby]

This mixture is not uncommonly used on a small scale on farms (which tend to have the ingredients on hand) for removing stumps and rocks.

You are talking apples and oranges or at least pop gun and cannon. Scaling a bomb is not as simple a process as you seem to want to make it out to be.

[ctdonath2]

Scaling a bomb is not as simple a process as you seem to want to make it out to be.

Neither is it as difficult a process as you imply.

A few ounces can remove a stump.
A boatload practically removed a city.
Somewhere inbetween is the truckload which is enough when detonated a few feet from major support columns.