About Vorti-Siv

MM Industries, Inc. was founded in 1968 by Mr. Rudolf Maroscher, P.E. who was then heading the electrical engineering department at the nearby Kent State - Salem Technical Branch. The company was built in a truly unique location near Mr. Maroscher's 400 acre apple, tennis and cattle farm, which is approximately two miles south of Salem, Ohio.

A year later, the company began manufacturing several models of the early VORTI-SIV gyratory sieves for the Lehmann Division of Mulling Manufacturing also in Salem. In 1973, MM Industries purchased all rights tooling and expenses to the then 25 year old VORTI-SIV product range. All manufacturing was immediately moved to the company's Salem Grange Road facility.

In 1978 Mr. Maroscher added a 40,000 square foot indoor tennis, racquetball, and exercise facility which is used by company employees, visiting sales representatives and customers.

The company's current manufacturing site has 25,000 square foot of machining, assembly, warehousing, fabrication, testing and office facilities along with a complete computer design and communication system.