This weekend my son helped me install our new bronze mailbox. It is an upgrade from our previous temporary mailbox. The only reason this was such a project is that with the heat the ground is like concrete. The posthole digger was getting bent when striking the ground. The solution was to hydrate the ground. We would spray water on the ground and watch it get sucked up. Then we could scoop away about 3 inches of muck. Eventually we got the hole to the required depth and the rest of the project was able to continue.