By far the most popular system of manufacturing fire amongst prehistoric peoples was the friction strategy. Most commonly, a pointed hardwood was twirled among the palms and pressed into a hole on the edge of the softer wood. Flint, pyrites, and fire drills are already found in Neolithic web pages https://building-fire-safety-insp24445.vidublog.com/35264341/workplace-fire-risk-assessment-things-to-know-before-you-buy