Lead to that of primary lead; some refining processes may be skipped depending on the material recycled and its potential contamination. Of the sources of lead for recycling, lead–acid batteries are the most important; lead pipe, sheet, and cable sheathing are also significant. Contrary to popular belief, pencil leads in wooden pencils have never been made from lead. When the pencil originated as a wrapped graphite writing tool, the particular type of graphite used was named "plumbago" (literally, "act for lead" or "lead mockup"). Lead metal has several useful mechanical properties, including high density, low melting point, ductility, and relative inertness.
2–0 lead is the worst lead then scores to make it 2-1, the leading team can panic and concede further, resulting in a draw, or even a win for the other team. In contrast, a team which is leading 1-0 will tend to concentrate and play with intensity to protect or extend their narrow lead, whilst teams leading by three or more goals have a sufficiently large buffer that comebacks are unlikely. The cliché may be invoked by coaches to encourage their players to maintain effort levels after obtaining a two-goal lead. It can also be used in broadcasting, such as by a commentator or studio