Self-Contained Self-Rescuer, The Inspection, Care and Use 

Mine Safety and Health Administration
Self-Contained Self-Rescuer, The Inspection, Care and Use of the CSE SR-100
DVD564-S - 2003
Underground coal miners work in an environment that is safer and healthier than ever before; but, if you should ever need to escape from your mine through unbreathable air, the SR-100 self-contained self-rescuer will supply about 100 liters of oxygen, or one hour of use. This video will describe the importance of proper inspections.