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27— <br />%I <br />24- <br />� I <br />j I <br />21— i II <br />� I <br />I <br />. � I <br />� I <br />� I <br />15— I <br />i <br />I <br />/ Ix/ <br />\_ I <br />a <br />i 12— I <br />o I <br />a I <br />I <br />9— I <br />I <br />I <br />I <br />6— I <br />I <br />I <br />3_ I <br />I � <br />—x— — — <br />O I JUN I JUL I AUG I SEP I OCT I <br />NOV <br />- - - - -x 1977 -1978 <br />1982-1983 <br />G <br />/ <br />/ <br />/ <br />x <br />/ x <br />JAN I FEB <br />MEA 7/83 <br />IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII <br />20451 <br />MONTHLY VARIATIONS IN RADIUM -[co <br />CONCENTRATIONS IN EFFLUENT FROM <br />SCHWARTZWALDER MINE IN <br />1977 -1978 & 1982 -1983 TIME PERIODS <br />Figure 6 -6 <br />