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Hangar One, revealed

As many as 100 workers per day labored over the past year to strip the siding from Moffett Field's Hangar One, in an environmental cleanup that has caused a mix of awe over the emergence of the gigantic skeleton and sadness over the lack of a plan for new siding.

According to the U.S. Navy, as much as 1.7 million pounds of siding, most of it laminated in PCBs, lead and asbestos, was removed and trucked to Grassy Mountain landfill in Utah.

An average of 65 workers a day looked like ants removing 30,382 panels from the massive hangar, pressure washing the frame and coating it with silver paint. The cost of the project increased from $26 million to $28.1 million because of unforeseen conditions, additional cleaning and preparation of the door mechanisms and the salvage of historical items for the hangar's owner, NASA, wrote the Navy's Scott Anderson in an email.

—Daniel DeBolt