ministry said.The “Daisy Bell” device was designed to help with avalanche control. The ministry said it was deployed to the river after traditional drilling and bomb-blasting failed to remove the ice jam. The " Daisy Bell" contains a mixture of oxygen and hydrogen, and is hung from a helicopter. When the helicopter hovers over a target site, the mixture is fired out from the bottom of the “bell,” breaking up ice below. Credit: YouTube/Russian Emergency Situations Ministry">