Henry Bessemer was an inventor and engineer from England. Not only  did he develop the Bessemer process for steel manufacturing, but he  also designed a machine that could mâ¦ake bronze powder.
The head-tilt/chin-lift is the primary maneuver used in any patient in whom cervical spine injury is not a concern. The simplest way of ensuring an open airway in an unconscious patient is to use a head-tilt/chin-lift technique, thereby lifting the tongue from the back of the throat.
The use of airway adjuncts may be an important component of successful BVM ventilation. There are two types of adjuncts: the oropharyngeal (OP) and nasopharyngeal (NP) airways. There are several sizes of each airway to consider.