A History of Short Words

From the New York Times Crossword Puzzle

OSHA

Tue, 30 Nov '21
Workplace org. created in 1970
Tue, 7 Sep '21
Hazmat regulator
Mon, 6 Sep '21
Agcy. dealing with workplace accidents
Sat, 4 Sep '21
Govt. plant inspector
Thu, 11 Mar '21
Org. with lots of inspectors
Mon, 1 Feb '21
Factory-inspecting org.