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<br />.... ,"" ....,,~,,-~ ':" <br />OJZ17g~''''''':<'' " <br /> <br />oo"l.\"" '} <br /> <br /> <br />Cold, copper, barite, and phosphate in less than economic quantities <br /> <br />have been found along the corridor. None of these mineral deposits <br /> <br />appear to have present-day economic potential. <br /> <br />Other minerals that are present, such as limestone, silica, gypsum, <br /> <br />clay, together with sand and gravel, now appear to have only a remote <br /> <br />future potential. <br /> <br />< <br /> <br />..._._----_....~-_._----' . <br /> <br />20 <br /> <br />\ <br />