My mom has a hole in the ground that she puts her clothes drying hanger in. Like this. The hole in the ground is a 2" or so pipe, set in concrete. The pipe has filled with gravel. Anyone have a tip on getting the rocks out? I can only get so many out using my fingers and then trying to use a set of chopsticks.
It is practical as rocks should float in mercury and it is safe if you use elemental mercury and don’t eat it.
It isn’t environmentally fantastic and you would want to remove it with a vacuum trap, which does make it a less than ideal option compared to a shopvac.