Efflorescence is the white powdery substance you might notice on basement walls, concrete surfaces, or masonry materials. It forms when water moves through a porous material like concrete or brick, ...

MANITOU SPRINGS, Colo. (KRDO) - Manitou Springs Police confirmed with KRDO Thursday the Manitou Springs Elementary School was evacuated again because the vacuum used to clean up a suspicious powder ...

Manitou Elementary School announced that the powdery substance that shut down the school for two days had a weak presence of capsaicinoid, the active ingredient in pepper spray. On both Dec. 17 and ...

Law enforcement agencies were summoned to Ohio Secretary of State Frank LaRose's home after a powdery substance with a written threat was delivered to the home on Sunday. 25,269 people played the ...

Meriden, Conn.-based MidState Medical Center locked down for three hours April 20 after a man entered the hospital’s emergency room with what police said was a white powdery substance on him later ...

Members of the Beaufort County Sheriff's Office bomb squad were called to a Bluffton bank Monday after two employees reported coming into contact with a powder substance while handling a cash deposit, ...

DATE ON TONIGHT’S INVESTIGATION. THE FBI HAS STEPPED IN TO INVESTIGATE A SUSPICIOUS LETTER THAT HAD POWDER INSIDE OF IT. INSIDE UPMC MERCY HOSPITAL. NOW, IT WAS DETERMINED THAT POWDER WAS FLOUR, BUT ...

A student in McMinn County brought a powdery substance to class this morning, and tests revealed it contained "several controlled substances," according to the sheriff. Sheriff Joe Guy says School ...

Law enforcement agencies are investigating after a "powdery substance" was delivered Sunday night to Ohio Secretary of State Frank LaRose Jr.'s home in Upper Arlington. Dan Lusheck, a spokesperson for ...