[burkaman]

You still dig a hole for this coffin: https://patentimages.storage.googleapis.com/US7631404B2/US07...

> To prepare a grave site for this screw in type of Easy Inter Burial Container installation, a drilling auger, such as those commonly used on a power-take-off attached on the working arm of a tractor backhoe, is used to bore a pilot hole in the direction of the intended Easy Inter Burial Container installation (See FIG. 28). The depth of this hole is usually about half the length of the Easy Inter Burial Container and approximately half its diameter, depending upon the type and condition of the earth or receiving material in which the burial is to be made. Adding an amount of water to the hole aids in causing the earth or receiving material to displace and more readily pack around the Easy Inter Burial Container as well as helps lubricate the passage of the hull and threads or fins during installation.