(1) the breakup of the two states constituting Czechoslovakia(2) the spring breakup of the ice(3) It is spring breakup , a time when the bush roads turn into a sea of mud, and forest operations grind to a halt.(4) We plotted these values and interpolated the dates of both ice breakup and absence.(5) Shortly after the breakup of ice, Murie and his guides started north again by canoe.(6) large quantities of oil are released after the breakup of a tanker(7) Most polar bears can handle a single season of early ice breakup , the authors write.(8) He also has eight pass breakups and a blocked kick.