288 aircraft - 202 Halifaxes, 74 Lancasters, 12 Mosquitoes - of 6 and 8 Groups. 3 Halifaxes and I Lancaster lost.
The target area was cloud-covered and the bombing was not concentrated. 36 houses were destroyed in Oberhausen and 4 people were killed but other places in the Ruhr may have been hit as well.
source: The Bomber Command War Diaries, Martin Middlebrook and Chris Everitt
Lancaster aircraft KB 817 crashed and burned near Linne, Holland during operations against Oberhausen, Germany. Pilot Officer R.C. Joiner bailed out and was killed when his parachute failed to open. Five Canadians, Pilot Officer J.B. Ogg, WOs J.T. Patterson, G.W. Leppington, R.B. Page, and Sergeant J.M. Campbell were taken Prisoners of War. Flying Officer Connor maintained control of the aircraft long enough for his crew to bail out; he waited too long and went down with the aircraft.