▁met als ▁will ▁become ▁un available ▁for ▁use ▁in ▁modern ▁technology . ▁ ▁The ▁military ▁rec y cles ▁some ▁met als . ▁The ▁U . S . ▁Navy ' s ▁Sh ip ▁Dis pos al ▁Program ▁uses ▁ship ▁breaking ▁to ▁rec laim ▁the ▁steel ▁of ▁old ▁vessels . ▁Sh ips ▁may ▁also ▁be ▁s unk ▁to ▁create ▁an ▁artificial ▁re ef . ▁U ran ium ▁is ▁a ▁very ▁dense ▁metal ▁that ▁has ▁qual ities ▁superior ▁to ▁lead ▁and ▁tit an ium ▁for ▁many ▁military ▁and ▁industrial ▁uses . ▁The ▁u ran ium ▁left ▁over ▁from ▁processing ▁it ▁into ▁nuclear ▁weapons ▁and ▁fuel ▁for ▁nuclear ▁react ors ▁is ▁called ▁de ple ted ▁u ran ium , ▁and ▁is ▁used ▁by ▁all ▁branches ▁of ▁the ▁U . S . ▁military ▁for ▁the ▁development ▁of ▁such ▁things ▁as ▁arm our - p ier cing ▁shell s ▁and ▁shield ing . ▁ ▁The ▁construction ▁industry ▁may ▁rec ycle ▁concrete ▁and ▁old ▁road ▁surface ▁pav ement , ▁s elling ▁their ▁waste ▁materials ▁for ▁profit . ▁ ▁Some ▁indust ries , ▁like ▁the ▁renew able ▁energy ▁industry ▁and ▁solar ▁phot ov olta ic ▁technology , ▁in ▁particular , ▁are ▁being ▁pro active ▁in ▁setting ▁up ▁rec y cling ▁policies ▁even ▁before ▁there ▁is ▁considerable ▁volume ▁to ▁their ▁waste ▁streams , ▁anticip ating ▁future ▁demand ▁during ▁their ▁rapid ▁growth . ▁ ▁Rec y cling ▁of ▁pl ast ics ▁is ▁more ▁difficult , ▁as ▁most ▁programs ▁are ▁not ▁able ▁to ▁reach ▁the ▁necessary ▁level ▁of ▁quality . ▁Rec y cling ▁of