One such process is roll stamping or roller-die engraving. This includes most of the stamping and machining, painting, and some coding. Piercing and cutting can also be performed in stamping presses. This makes them suitable for use in readmission such as hand stamping. Inexpensive record players typically used a flanged steel stamping for the turntable structure. Several automobile manufacturers adopted stamping of parts. Copies were produced by stamping the original into an iron plate, called a matrix. But General Motors construction of a stamping and tool plant here created many new jobs. Vinyl offered improved performance, both in stamping and in playback. Notably, the AK-47's milled steel receiver was replaced by a U-shaped steel stamping. On the whole, they were silent, except for the shudder of their stamping hoofs. The MKZ is manufactured at Ford's Hermosillo Stamping & Assembly plant in Mexico. The mines and stamping mills ran three shifts. The Social Democrats, meanwhile were also illegally stamping brochures, leaflets, and newspapers. It is marked by synchronized jumping, stamping, and movement, similar to tap dancing.