In English “salt of the Earth” describes a person held in high esteem. Salt is valued not only because of its properties as a condiment and preservative, but also because it is essential to the health of humans and animals. The oceans contain the largest amount—about 3 percent of the weight of seawater is sodium chloride. For some purposes rock salt may be used in its solid, raw form, but all other salt undergoes some purification process.Salt domes and beds of rock salt that lie on or near the surface can be excavated in much the same manner as any other mineral deposit. They may occur as beds that lie on or near the Earth’s surface or as deposits deep underground. The domes apparently pierced surrounding rocks and were formed when geologic forces pushed up plugs of salt from depths as great as 50,000 feet (15,000 meters). It is then fed into the grainer—a long, open trough surrounded by steam-heating coils. This helped populations to grow, cities to develop, and soldiers in wars to be fed.
These include sandwich meats, yummy pizza, cheese, bread, potato chips and many other snacks and foods. Among the ancients, to “eat salt” with another person was to create a bond of friendship.Salt became one of the principal articles of early commerce. In fact our modern word salary is derived from it. The resultant brine is then collected and treated. Sodium chloride is by far the most common salt that exists naturally on the Earth. We hope you enjoy and have fun exploring our history. The Latin word salarium means “salt money” and referred… Long-term deprivation causes dehydration, a progressive drop in blood pressure, coma, and finally death. Salt was probably used in People often traded salt for other things. Switch Level
Images & Video Britannica does not review the converted text. If impurities are present in unacceptable levels the rock salt may be dissolved to form a brine. The brine boils off through the action of the vacuum. Where salt deposits are too far below the surface to be mined efficiently, water may be pumped down to dissolve the deposits. Water-softening equipment uses salt, and salt is indispensable in the manufacture of certain chemicals.The substance commonly known as table salt is sodium chloride (NaCl), though the term salt is also used in chemistry to refer to the compounds produced by the reaction of acids with bases (Physically, table salt occurs as a cube-shaped crystal that, depending on purity, may be colorless, transparent, or translucent. Other major producers are China with about 16 million tons and Canada with about 11 million tons.In the ancient world, salt often took on a religious significance. Many kids enjoy a variety of delicious foods that contain lots of salt. By the time of the Civil War, thousands of workers were producing over 225,000 short tons of salt by boiling.
In fact our modern word salary is derived from it.