In recent years, MSU colleagues assessed the efficacy of dry heat in a forced convection oven for decontamination of N95 masks for reuse in Lansing-area medical centers. The masks, initially at 20C, are laid individually on an open conveyor belt moving at 8 m/s, while hot air at 100C flows horizontally across the belt. The key properties and parameters for theses masks are given as follows: diameter = 12 cm, height = 6 cm, thickness = 3.2 mm, thermal conductivity = 0.08 W/mK, specific heat = 1.4 kJ/kgK, density = 720 kg/m3 , and thermal diffusivity = 79 10-9 m2 /s. 3. Problem-Solving: Decontamination of N95 Masks How long must the masks be in the oven before the center of the mask thickness reaches 92C