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<br />Figure 10: <br />OW System Unused Surface Supplies <br /> <br />350,000 <br /> <br />300,000 <br /> <br />:.;. <br /> <br />..,' '. ,. Ii <br /> <br />" <br /> <br />~;. <br /> <br />.,' .' <br /> <br />250,000 <br /> <br />. . I~~, ~l,.'. <br /> <br />"",' :{, <br /> <br />'\,,,' <br /> <br />_. ., <br />: I :I~':! <br /> <br /><, <br /> <br />......-....., <br /> <br />" <br /> <br />,~ f'- <br /> <br />.,~- <br />'" <br /> <br />j.".. .' <br /> <br />... .'.,. ';"" <br /> <br />, , <br />,~ '. . <br /> <br />... <br />ra <br />Gl <br />~ 200,000- <br />Gl <br />Co <br /> <br />..;; I.". <br /> <br />. ' <br /> <br />~:. '.,::.d', <br /> <br />,', <br /> <br />. )', <br /> <br />, <br /> <br />- <br />Gl <br />.!! <br />Gl <br />... <br />U <br />ra <br /> <br />150,000 <br /> ... ~ <br />100,000 " <br /> " <br />50,000 <br /> "'" ,i <br /> " <br /> .,' <br />0 <br />1947 1951 1955 <br /> <br />~l' <br /> <br />"' <br /> <br />,,' <br /> <br />,"j:'/' <br /> <br />'";\ <br /> <br /> <br />" <br /> <br /> <br /> <br />. ~ ,\ ~:~:~;/~ ~t?~ <br /> <br />" <br /> <br />~ ' ," " <br />'.co. <br /> <br />'",; '.~'~ .' <br /> <br />'!ia.vetalie, !=.'ll;4;60Q jJfly[;t <br /> <br />..11 <br /> <br />, .;:;:: <br /> <br />;':< <br /> <br />. ~" .... <br /> <br />,r <br /> <br />, <br />',(, <br />.--. <br /> <br />"-." <br />~ " . <br /> <br />1959 <br /> <br />1963 <br /> <br />1967 <br /> <br />1971 <br /> <br />Year <br />