Back in 1972, when New York State engineers were looking for ways to clean the Statue of Liberty, they had many concerns involving issues of the environment, waste disposal, and protection of the statues surface itself. Any use of any abrasive material to clean the surface would have been very harmful to the soft copper plates and pollution from the waste in the water surrounding the statue was also a big concern. Soda Blasting was invented because it would not only do the job while having a negligible impact on the waterways and harbor, but it was also non-abrasive. Just like on the surface of the Statue of Liberty, this non abrasive action allows Soda Blasting to be used on surfaces that currently popular abrasive media would damage. i.e.: aluminum, stainless steel, brick, stone, glass, fiberglass, wood, some plastics, seals, bearings, splines, radiator cores, transmission cases, and hydraulic cylinders. In some cases, using dry blasting, shutdown of electric motors and pumps is not necessary.