2. Watch for air holes.
Rescue: In trying to rescue a person who has broken through the ice, always tie a rope around your own body and have this tied to some firm object on shore. Do not try to walk out to the rescue as the ice will probably break again under the weight of your body on so small an area as the size of your feet. Always get a long board, ladder, rail or limb of a tree, and either crawl out on this, which will distribute the weight of your body over a larger surface of ice, or lie flat on your stomach and crawl out, pushing the board ahead of you so that the person in the water may reach it. If you yourself break through the ice in attempting a rescue, remember that trying to pull yourself up over the edge of the ice only breaks it more. If rescuers are near it is much wiser to support yourself on the edge of the ice and wait for rescue.
After getting the person out of the water use artificial respiration if necessary and bend every effort to get the patient warm and breathing properly.
ASPHYXIATION
Prevention: Below are seven rules for preventing asphyxiation:
1. When coal stoves and furnaces are freshly filled with coal, coal gas may escape if the dampers are not properly regulated. See that all dampers in coal stoves and furnaces are correctly arranged before leaving them for any long time, as for the night.
2. Do not go to sleep in a house or room with a gas jet or gas stove turned low. The pressure in the pipes may change and the flame go out, or a breeze may blow out the flame leaving the gas leaking into the room.
3. Do not blow out a gas jet.
4. Be careful to turn off gas jet completely.
