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1 <br />I, <br />Column 1 Run <br />Length along Core axis from collar of hole to end of run. <br />Example: ~ run from 15.1 feet Co 24.3 ?let Nould be recorded <br />~' as Za.3. <br />!1 Column Z T.C.R. - Total Care Recovery <br />The rootage of core recovered in a run expressed as a <br />~ ~ percentage or the total run. <br />Column 3 R.Q.O. -Rack Quality Designation <br />' The le.^.gch or core recoverea as solid cylinders, escn more <br />than 4 inches long expresses as a pert=_ntage of the length <br />' or the care run. <br />Column 4 Strength <br />Strength or pieces of intac_ care can be classified using <br />' the following table. <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />