One of America’s first “blackout” plants will be the $12,000,000 factory of the Douglas Aircraft Company in California. Its 12 buildings will cover 200 acres, providing 1,400,000 square feet of working space under roof,and employ 16,000 workers. The plant will be windowless, fireproof and air-conditioned, and is to be painted to blend with the landscape. Utilities and essential materials will be housed in bombproof underground vaults.