High Quality Content by WIKIPEDIA articles! The Multipurpose Applied Physics Lattice Experiment (MAPLE) dedicated isotope-production facility was a project jointly undertaken by AECL and MDS Nordion. It was intended to include two identical reactors, as well as the isotope-processing facilities necessary to produce a large portion of the world`s medical isotopes, especially Molybdenum-99, medical Cobalt-60, Xenon-133, Iodine-131 and Iodine-125. An operational license for the MAPLE 1 reactor was granted in 1999, and the reactor went critical for the first time soon after. However, problems with the reactor, most notably a positive power co-efficient of reactivity, led to the cancellation of the project in 2008.