In 1993, a backhoe operator in Spring Valley D.C. made an alarming discovery: unexploded mortar and artillery shells, dangerous fragments of American University's past as a testing ground for WWI munitions: https://t.co/1S4JE01oB6 In 1993, a backhoe operator in Spring Valley…
— Kenneth Samson (@PangurBanC) Sep 6, 2022
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September 06, 2022 at 12:38PM
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