Interestingly, the ransom note made the same factual error, calling the explosive TNT instead of dynamite. "If exploded this bomb contains enough TNT to severely damage Harrahs across the street. This should give you some idea of the amount of TNT contained within this box. It is full of TNT."
That's part of why they tried decapitating the device with a shaped charge. TNT isn't as easy to set off as dynamite is. According to a different account I read, if it had, as advertised, been TNT (and there weren't a few loose sticks in the top), that plan would have had a decent chance of working.
(You can read the full thing at https://archives.fbi.gov/archives/news/stories/2009/august/a...)
That's part of why they tried decapitating the device with a shaped charge. TNT isn't as easy to set off as dynamite is. According to a different account I read, if it had, as advertised, been TNT (and there weren't a few loose sticks in the top), that plan would have had a decent chance of working.