Crude fertilizers and crude minerals are in danger of long-term shortage, but little is being done to counteract that probability.
Examples of minerals most in danger of being depleted, with their most common industrial uses are: antimony (batteries, semiconductors); bismuth (fire safety devices); cobalt (jet aircraft engines, mining tools); copper (electric wiring and equipment); lead (storage batteries for transportation, communications); mica (insulation, stereo speakers); silver (photography, dental alloys); tin (anticorrosive in many alloys); and zinc (brass, bronze, galvanized iron).