It could be days before they can rescue you and your family. Some of the same techniques used in wilderness survival shelters, can be implemented in an urban emergency shelter. We need to minimize the loss of heat. Convection, if the windows and doors are closed we lower heat loss by convection to the body.
The healing time it takes for a scab on the face to heal depends on  many factors including the length and depth of the wound. Most  facial scabs take anywhere from 3-10 day â¦ s to heal.
It takes 10 days to 3 weeks for a second degree burn to heal. The pain lessens each day and is typically fully resolved once the skin has repaired. It takes longer for the pigmentation of skin to return to normal. The affected area should be kept out of the sun until pigmentation has returned to normal.