nprnews_____ = ||| lubuntu at wor3|||Death Toll In Beirut Climbs To At Least 135 After Massive Explosion||| kickerpage = |||no kicker pagenpr for NPRNEWS||| summarynpr = |||About 5, 000 people were injured in the explosion Tuesday that devastated Lebanon’s capital. A question looms over the stockpile of 2, 750 tons of ammonium nitrate believed to have exploded: Why was it there?