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Hey @katyhuff,

This is also built on #5. I've added a decent amount of content and made some comments based on both your comments and content. Let's iterate on this PR as you see fit; I'm happy to change the language as needed.
The article appears to talk about a different simulator tool: SINDA - which turns up zero information in a google search.  The abstract says SINDA is an agent-based tool, but then goes on to list all the features that "[will be implemented eventually]" - which are nearly all existing features of cyclus (which is very googlable :-)