Add Yahoo as a preferred source to see more of our stories on Google. A manhole cover launched into space with a nuclear test is the fastest human-made object. A scientist on Operation Plumbbob told ...

ST. JOHNS COUNTY, Fla. — Manhole inspections and smoke testing of the sanitary sewer system started in St. Johns County on Monday. Smoke testing is performed periodically to identify sources of ...

DIBOLL, Texas (KTRE) - When the City of Diboll gets a heavy rain event, storm water can find its way through damaged manholes in the city, mix with sewage, and cause lines to overflow. It’s a problem ...

Robert Brownlee was on the Operation Plumbbob team that launched an object in space before Sputnik. They put a manhole cover above a nuke underground, and the explosion shot the iron cap into space.

When I first saw this story on an old Quora thread, I didn't believe it. It wasn't like that. This manhole cover was shot into space with a nuclear bomb. Robert Brownlee, an astrophysicist who ...