MEMC Electronic Materials, Inc.
501 Pearl Drive
P.O. Box 8 St. Peters, MO 63376-0008
The St. Peters Plant serves as the corporate world headquarters for MEMC. In addition, it serves as the research and development headquarters because of its skilled workforce and diverse production capabilities. This facility has provided advanced-specification, large-diameter, polished and epitaxial silicon wafer products for many of the world’s top device manufacturers. In September 2009, the Company announced plant consolidations whereby most of St. Peter's silicon wafering operations are expected to cease by Q2 2010 and its epi and crystal operations are expected to cease by the end of Q1 2011. Research and development and advanced Silicon on Insulator manufacturing are expected to continue on site.
St. Peters, Missouri, USA (approximately 31 miles west of downtown St. Louis, Missouri)
Polished wafers (150mm), epitaxial wafers (100mm, 125mm, 150mm and 200mm), SOI wafers (200mm and 300mm), CZ monocrystal: 100mm, 125mm, 150mm, 300mm wafers, Arsenic and Antimony, DSS multicrystal, monocrystalline and multicrystalline solar wafers and CZ Monocrystal for silicon parts (325mm+)
The St. Peters Plant was built in 1959 by MEMC (formerly, Monsanto Electronic Materials Company). This facility was the first merchant manufacturer of silicon wafers in the world - the first wafer produced was 19mm in diameter! Originally just a few acres in size, the facility now occupies 185 acres. The St. Peters Plant won the coveted "Missouri Quality Award" in 1994. This award is based on the same criteria as the Malcolm Baldrige National Quality Award, but at a state level. In 1995, the St. Peters Plant was recognized as one of the "Top Ten" manufacturing facilities in the USA by Industry Week Magazine.
From Lambert-St. Louis International Airport: Take I-70 West 15.3 miles to exit 220 (exit sign reads "Hwy 79/Elsberry/Louisiana"). At the top of the exit ramp, turn right onto Highway 79 and go 0.8 miles to Pearl Drive exit (veer right, off Highway 79). At the stoplight, turn left onto Pearl Drive and go 0.2 miles to MEMC Drive. Turn left onto MEMC Drive, veer left at the first fork in the road (the lake is now on your right). At the second fork, veer right. Visitor parking is at the top of the hill.
St. Peters Map (PDF)