On 26 October, the 19th Division drove off a German attack on Stuff Redoubt at 5:00 a.m.. On 28 October the Special Brigade R. E. fired 1,126 "SK" (lacrymatory) 4-inch Stokes mortar bombs into Beaumont Hamel, 135 40 pounds phosgene bombs into the village and Y Ravine nearby and thirty 2-inch White Star (50 percent chlorine: 50 percent phosgene) mortar bombs into Serre.