Primitive Technology with Survival Skills Calcium Oxide and Water is our next video. By the primitive technology we dig holes to hydrolyze High Calcium Oxide + H2O. We dig the pit and get water from the stream. We put CaO in the hole. The chemical reaction CaO + H2O = Ca (OH) 2. Then we went to get the sand in the stream to make the next video. We have struggled to get more sand. We will continue to make the next video on primitive technology and survival skills. Subscribe to the channel to watch the latest videos. Thank you.