Hackworth wasn't worried, but he watched the initial phases of growth 
anyway, just because it was always interesting. In the beginning was an empty 
chamber, a diamond hemisphere, glowing with dim red light. In the center of the 
floor slab, one could see a naked cross-section of an eight-centimeter Feed, a 
central vacuum pipe surrounded by a collection of smaller lines, each a bundle 
of microscopic conveyor belts carrying nanomechanical building 
blocks—individual atoms, or scores of them linked together in handy 
modules.