 In 1994, the company, operating under the name GMT Microelectronics ("Great Mixed-signal Technologies"), reopened MOS Technologies' original, circa-1970 one-micrometre fab in Norristown, Montgomery County, Pennsylvania that Commodore had closed in 1993.GMT would have provided foundry services based on TelCom's Bipolar and SiCr Thin Film Resistor processes and would have been licensed alternate sources for TelCom's Bipolar based products., with production running at 10 thousand 5-inch wafers per month, producing CMOS, BiCMOS, NMOS, bipolar and SOI devices.The plant had been on the EPA's National Priorities List of hazardous waste sites since October 4, 1989.