sentences:  Since this split Norna-Salhus gradually rose to prominence in national athletics, especially within the jumping section.Triple jumpers Sigurd Njerve and Ketill Hanstveit established Norwegian records.Other athletes such as decathlete Benjamin Jensen, race walkers Kjersti Plätzer and Erik Tysse, and Mona Holm, Norwegian record holder in the women's hammer throw, has later joined Norna-Salhus.