Drill approximately 40 holes spaced evenly across the lower third of the drum. The holes can be in any pattern as long as they cover the drum equally.
Clear away any debris from the fire ring area and ensure that the ground is even. For greater safety, dig a 2- to 3-inch hole in the ground for the drum to sit in. An alternative is to fill the bottom of the drum with a layer of 6-inch rocks. Either method helps prevent the drum from tipping over and upsetting the fire.
Surround the drum along the bottom, after it is in place, with a stack of 6-inch rocks. You can extend the rocks to two or three rows to help keep feet from accidentally touching the side of the drum.