The Pebble Bed Modular Reactor is a particular design of pebble bed reactor developed by South African company PBMR (Pty) Ltd from 1994 until 2009.http://www.world-nuclear-news.org/NN-PBMR_postponed-1109092.html World Nuclear News 11 September 2009 PBMR facilities include gas turbine and heat transfer labs at the Potchefstroom Campus of North-West University, and at Pelindaba, a high pressure and temperature helium test rig, as well as a prototype fuel fabrication plant.