T2-3D: Battle Across Time simultaneously at 30 frames per second. Several elements of "T2 3-D: Battle Across Time" have been patented by Universal, including the seat drop effect, the blending of live action and film, the trio of projection screens, and the simulated assault weapons. The film was shot at the abandoned Eagle Mountain iron ore mine, just north of Desert Center in California. The cast and crew from the first two Terminator films returned for the shoot, including Arnold Schwarzenegger as The Terminator, Linda Hamilton as Sarah Connor, Robert Patrick as T-1000, and Edward Furlong as John Connor. To achieve the 3-D effect
Terminator 2: Judgment Day brief shots coming from the Westfield MainPlace and Los Cerritos Center, to flood control channels in the San Fernando Valley, which played host to the chase between the Terminators and John; a river had to be redirected to allow filming on the otherwise wet channels. Cameron and his crew also filmed "Terminator 2" at The Corral Bar and the Lake View Medical Center (known as Pescadero State Hospital for the Criminally Insane in the film), both located in Lake View Terrace. The external shots of Cyberdyne Systems Corporation were filmed on location at an office building on the corner of