Not until eventually about 7000 bce did Neolithic male get responsible fire-earning strategies, in the form both of drills, saws, and also other friction-generating implements or of flint struck from pyrites. Even then it was far more handy to help keep a fire alive completely than to reignite it. 115 https://fireratedductworkinductio02334.slypage.com/38167450/not-known-factual-statements-about-fire-rated-ductwork-induction