While tablets are in the ground, that is, before their removal from the soil, they are in a state of equilibrium with their environment. Once removed from the earth outside forces, such as heat and humidity, begin to act on them. Salts, and other minerals in the interior of the tablets, may be drawn to their surfaces that may be damaged and/or become unreadable as a result. Once tablets have been baked they become insoluble to water. This allows them to be soaked in one of the two sinks in order to dissolve these destructive salts and minerals. This improves the readability of a tablet's surface and removes the harmful salts and other minerals from the interior and exterior of the tablet.