That used to be the method of choice for getting rid of stumps and boulders. Even as late as the '70s, I could just walk into a feed store, buy a case, and walk out. I would imagine that today, you would have to jump through all kinds of hoops just to buy a box of blasting caps, yet alone a case of dynamite! The guy I was working with sent his 16yo daughter back to the store for another box of caps. No problem!
What's that smell? I think this tiny ad may have stepped in something.