04-07-2011, 05:26 PM
Those who have a library of back issues of Model Railroader and The Short Line And Narrow Gauge Gazette are invited to look up "unobtanium" - lunar railroad layout published in the 60's - and "craddonium" - The Degelbeef and Craddonia Railroad - published in the 90's.
Craddonium is especially interesting as it is both a major ingredient in the manufacture of powerful explosives and a foodstuff.
Craddonium is especially interesting as it is both a major ingredient in the manufacture of powerful explosives and a foodstuff.