41. Demolitions experts used dynamite to break up a 60-mile ice jam that had made the Lena River rise. 42. Demolition experts used dynamite to break up a 60-mile ice jam that had made the Lena River rise. 43. The 449th would also assist the local government by bombing ice jams on the Kuskokwim and Yukon Rivers. 44. Ice jams can be blown up using explosives, or broken with wrecking balls and removed with heavy construction equipment.45. But in 1902 water backed up from an ice jam and flooded it again, washing away the old building. 46. Villages downstream are still under threat, as emergency workers have not destroyed all the ice jams clogging the river. 47. There were hurricanes Isabella and Isador, which struck Louisiana in 2002, and ice jams in upstate New York in 1995. 48. Lewis said towns in the Montpelier area are now working on a coordinated approach to the problem of ice jams . 49. The streams beds haven't been scoured by any significant floods or ice jams , and the trout should be prospering ." 50. It is known that a bridge was built here in 1840, and was subsequently destroyed by ice jams and flooding.
