Usability includes methods of measuring usability, such as needs analysis and the study of the principles behind an object's perceived efficiency or elegance.
Crowne Burial Vault. The burial vault is a waterproof container designed for earth burial. Made in America and constructed of high technology polymer, it is strong enough to withstand the weight of earth-moving and cemetery maintenance equipment.
Long, winding underground tunnels in which Christians buried their dead. Later, wealthy families built catacombs beneath their homes. Dark and cool, these chambers were suitable not only for burial, but also for the storage of fine wines.