9/11 conspiracy buffs have long pointed to the collapse of 47-story building 7 of the World Trade Center as evidence that there was a conspiracy behind the attacks. Many have speculated that only a controlled explosion could have led to the collapse of the building.

The government has just released a study in an attempt to refute these theories.

Federal investigators issued a report Thursday concluding that fires brought down a skyscraper next to New York’s twin towers on Sept. 11, refuting conspiracy theorists who have long believed that explosives somehow caused the collapse.

Scientists with the National Institute of Standards and Technology say their three-year investigation of the collapse of the 47-story World Trade Center 7 was the first known instance of fire causing the total failure of a skyscraper.

The investigators also concluded that the collapse of the nearby towers broke the city water main, leaving the sprinkler system in the bottom half of the building without water.

The structure has been the subject of a wide range of conspiracy theories for the last seven years, partly because the collapse happened about seven hours after the twin towers were felled. That fueled theories that something else might have caused the collapse.

This explanation seems very plausible to me.