Boeing

The Boeing Everett, Wash., site's main assembly building has grown over the years to enclose 472 million cubic feet of space (13.3 million cubic meters). Its footprint covers 98.3 acres (39.8 hectares). The original factory was completed in 1968. From its original size, it was expanded by more than 45 percent in 1980 to house the 767 assembly line, and another 50-percent enlargement was added in 1993 for 777 assembly. The site, too, has grown to 1,025 acres (415 hectares), including 215 acres (86 hectares) of paved yards and parking, and 282 acres (113 hectares) of building area.