Simplify the following text for a Grade 7 native English-speaking person.
Original: Brookhaven National Laboratory ( BNL ) , is a United States national laboratory located in Upton , New York on Long Island , and was formally established in 1947 at the site of Camp Upton , a former U.S. Army base .
Simplified: Brookhaven National Laboratory is a laboratory in the United States at Long Island , New York . It is located on the former location of Camp Upton , a US army camp .