Confined Space class March 7-10, defined as "confined space is a space with limited entry and egress and not suitable for human inhabitants. An example is the interior of a storage tank, occasionally entered by maintenance workers but not intended for human occupancy." Members of CFD and Enhanced Environmental and Emergency Services, Inc (E3) attended the class and was taught by E3 Environmental. Confined Space Rescue has elements of Rope Rescue and HazMat Tech. It was taught to OSHA Standards.
Original source can be found here.