April 29: Fatah shoots two mortars at the Nahal Oz crossing, where Gazans get most of their fuel.
April 30: Islamic Jihad shoots four mortars at Nahal Oz.
May 2: The PRC shells Nahal Oz.
May 2: The DFLP shoots two mortars at Nahal Oz.
May 4: Israel ships fuel through Nahal Oz.
May 5: The Abu Ala Reesh Brigades shoots a mortar at Nahal Oz; Hamas shoots two mortars at Nahal Oz
May 9: Islamic Jihad shoots four mortars at Nahal Oz
May 10: Hamas shoots at least one mortar at Nahal Oz.
May 12: Israel ships fuel to Gaza through Nahal Oz.
May 15: Hamas shoots two mortars at Nahal Oz.
May 15: Islamic Jihad shoots five mortars at Nahal Oz.
May 16: The DFLP shoots two mortars at Nahal Oz.
May 19: Israel ships fuel through Nahal Oz.
As far as the two other major crossings into Gaza:
The Sufa crossing was attacked on May 5, 6, 7, 10, 11, 13, 15, 17 and 19.
The Kerem Shalom crossing was attacked on April 29, May 5, 11 and 14.
Just something for "human rights" groups to keep in mind as they demand that Israel supply Gaza with all its needs.