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• See Diagram 1 for graphical representation. See Table 1 for mnth, <br />MATERIAL STRENGTH <br />Fill material x111 be derived from the existing mine bench xhich <br />consist of quartz sandstone xlth a calcareous cement and grey to dark <br />grey shale that contains argillaceous and carbonaceous shale partings. <br />Relat.lve tou;;hnr.ss; 1. i <br />F't. lb. ~ ft,2 of fracture i 312,4 <br />Compressive strength lbs. ~ Sn,2 ~ 9$00 ( no partings) <br />Compressive strength lbs, ~ in,2 8400 ( partings) <br />Compaction i 12.5 ;~ <br />• <br />GEOTECHNICAL KNOYLEIIGE OF SITE <br />0 <br />1. This report, Ceotechnlcal aid Stability Arelysis, Proposed Back- <br />2. La Plata Coal Coruoration's La Plata N 1 Mined Land Reclamation <br />3, Required soils sampling, (stipulation), La Plata ff 1, Ia Plata <br />County, Colorado, <br />All of these documents aze in ttie possession of ttie Colorado I^.ined Iard <br />Reclamation Division. <br />~ - <br />P mothy Meier , Geologist <br />~ (3) <br />