MOHR was founded in 1983 with the goal of improving nuclear safety. MOHR co-founder Dr. Charles Mohr was project manager of the U.S. Nuclear Regulatory Commission's (NRC) large-break loss-of-coolant-accident (LOCA) experiments carried out in the National Research Universal (NRU) reactor at Canada's Chalk River National Laboratory from 1978-1983. These comprehensive experiments were designed to study mechanical deformation, flow blockage, and coolability during heatup, reflood, and quench phases of a large-break LOCA (NUREG/CR-1882, NUREG/CR-1208) and involved extensive instrumentation of 32 full-length (12 ft.) nuclear fuel rods. Time-domain reflectometer (TDR) liquid level probes developed by Dr. Mohr were a key component of the test train instrumentation package(NUREG/CR-3272).