passage: The factory is highly automated and designed to shift flexibly to produce many different kinds of chips to suit demand .
  " The diversity is the big difference with this plant , " said Richard Doherty , president of Envisioneering , a research firm .
  " It gives IBM the capability to make so many different kinds of custom chips , and the world is going to custom chips . "
  The 140,000-square - foot plant is a testament to advanced manufacturing technology .
  The 300-millimeter silicon wafers -- about the size of a standard pizza -- are shuttled around the facility in enclosed plastic pods , which ride on overhead tracks .
  They drop down from wires automatically into machines , sheathed in stainless steel and glass , for each stage of processing and fabrication .
  Throughout the 500 processing steps , which typically last 20 days , the wafers are not touched by human hands .
  The circuits etched into the chips are less than one thousandth the width of a human hair .
  Human operators are there to monitor the systems , catch errors and fine - tune the production process for maximum efficiency .
  Because each of the hundreds of processing machines is self - enclosed , and essentially airtight , the uniforms operators wear are less constricting than in the previous generation of chip plants , which looked like space suits .
  The operators at the East Fishkill factory wear light nylon uniforms , light blue shoe coverings and translucent hair nets made of paper .
  They look more like workers in a bakery .
  Yes , said Richard Brilla , director of the new facility , " but the donuts are a lot more costly here . "
  Each wafer , holding hundreds of chips , is worth $ 6,000 to $ 10,000 apiece , depending on what insulation , circuitry and materials are used .
query_and_answer: What are the steps that are required for every stage of fabrication ? || The 300-millimeter silicon wafers are shuttled around the facility in enclosed plastic pods, which ride on overhead track before being lowered down from wires automatically into machines. Finally, they are sheathed in stainless steel and glass
evidences: The 300-millimeter silicon wafers -- about the size of a standard pizza -- are shuttled around the facility in enclosed plastic pods , which ride on overhead tracks . They drop down from wires automatically into machines , sheathed in stainless steel and glass , for each stage of processing and fabrication .