About Us | Isc Vsi
In 1967, Donald R. Warren of Crusher Service Company in Spokane, Washington developed and patented a VSI Crusher that in 1969 became CIMCO (Centrifugal Impact Manufacturing Company). In 1970 CIMCO was sold and in 1973 became known as SPOKANE Crusher. Don's son, Ken Warren, was involved in all aspects of the …