D.: The pulse, blood pressure and temperature of an individual.
E.: The number of minutes each hour designated for work and rest, in order to complete a task without producing undue heat stress. These may be developed empirically ("work as long as it takes to breath one bottle of compressed air") or may be based on established criteria, such as the enclosed US Army tables, which are designed for a specific population and require special temperature determination.
A.Follow simple preventive measures to avoid heat injuries, such as maintaining an adequate state of hydration by remembering to drink fluids frequently throughout the day. No additional salt intake is usually necessary before or after dehydration. Emergency responders may be more comfortable with a single layer of porous cotton under their protective gear since this will trap the least amount of heat