If a food bears a USDA Organic label, it means it's produced and processed according to the USDA standards. The seal is voluntary, but many organic producers use it. Products certified 95 percent or more organic may display this USDA seal.
A machinist is a person who uses machine tools to make or modify parts, primarily metal parts. This process of machining is accomplished by using machine tools to cut away excess material much as a woodcarver cuts away excess wood to produce his work.
To form a comparison, it can be said that a machinist is to metal as a sculptor is to his clay. In a sense, the machinist is the artist and the metal of choice is their raw material. The most common metals used in machining are brass, copper, steel, and aluminum. Various alloys of these metals may also be used. Less frequently, a machinist can be called on to use rubber, glass, wood, or plastic.