We used full and half-sticks of dynamite, depending upon stump size, back in the 50s & 60s, to blow stumps in clearing fields, and they’d leave quite a crater, with the stumps and root systems being 15-20ft away from the crater.
My paternal grandfather was a western PA coal miner wayback in the day. He came to the US right around 1900 at the age of 12 and went right into the mines. He was eventually promoted to “Shot Charge” and was responsible for setting the TNT charges in the mines. Back then, he would just go to the company store and buy his TNT there, and kept his stock at his house. In addition to his work in the mines, he was regularly called on by local farmers and property owners to clear stumps.
When I helped my grandfather and father dynamite back then, my favorite was to blow a beaver dam. They would blow a length of the dam, then it was my job to pick up as many fish as possible that were being washed thru the gap. We always had fish for supper that night, even if they were sorta flat on one side.