<sod>In West Germany, in 1986, an accident involved a jammed pebble damaged by the reactor operators when they were attempting to dislodge it from a feeder tube (see [[#Thorium high-temperature reactor|THTR-300 section]]). This accident released radiation into the surrounding area,<ref>http://www.nirs.org/factsheets/pbmrfactsheet.htm</ref> and probably was one reason for the shutdown of the research program by the [[West German]] government.<eod>
<sod>In West Germany, in 1986, an accident involved a jammed pebble that was damaged by the reactor operators when they were attempting to dislodge it from a feeder tube (see [[#Thorium high-temperature reactor|THTR-300 section]]). This accident released radiation into the surrounding area,<ref>http://www.nirs.org/factsheets/pbmrfactsheet.htm</ref> and probably was one reason for the shutdown of the research program by the [[West German]] government.<eod>