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Mr. Lee Sampson <br />December 7, 2021 <br />Page 16 <br /> <br />Agapito Associates, Inc. <br /> <br />Figure 5c. Raw Recovery—Collom D1/D2 Seam <br />Design <br />Depth of Cover, ft 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 <br />190 60.2 59.4 58.3 57.5 56.8 55.8 55.1 54.4 53.5 52.9 52.3 51.5 50.5 <br />210 58.6 57.6 56.8 55.8 54.9 54.2 53.3 52.6 51.8 51.2 50.4 49.8 49.3 <br />230 57.1 56.1 55.1 54.2 53.3 52.4 51.8 51.0 50.2 49.4 48.8 48.1 47.6 <br />250 55.7 54.7 53.5 52.6 51.8 51.0 50.2 49.4 48.6 47.9 47.2 46.7 46.0 <br />270 54.6 53.6 52.4 51.4 50.4 49.6 48.8 47.9 47.2 46.5 45.8 45.2 44.6 <br />290 53.6 52.6 51.4 50.3 49.4 48.4 47.4 46.7 46.0 45.2 44.6 43.9 43.2 <br />310 52.6 51.5 50.5 49.5 48.4 47.4 46.5 45.7 44.8 44.0 43.3 42.6 42.0 <br />330 51.4 50.4 49.4 48.3 47.4 46.5 45.6 44.7 43.9 43.2 42.4 41.6 40.9 <br />350 50.1 49.3 48.3 47.3 46.4 45.6 44.7 43.9 43.1 42.3 41.6 40.8 40.1 <br />370 48.8 47.9 47.0 46.3 45.3 44.5 43.6 42.9 42.2 41.4 40.7 40.0 39.4 <br />390 47.5 46.6 45.7 44.9 44.1 43.5 42.8 41.9 41.1 40.5 39.7 39.1 38.4 <br />410 46.4 45.4 44.6 43.8 43.0 42.3 41.6 40.9 40.2 39.5 38.9 38.2 37.5 <br />430 45.2 44.2 43.4 42.5 41.8 41.1 40.5 39.8 39.2 38.6 38.0 37.3 36.7 <br />Coal strength, psi 821 Mining width, ft 11.50 No. web pillars 19 <br />Mining Height, ft <br />35 <br />40 <br />45 <br />50 <br />55 <br />60 <br />65 <br />190 210 230 250 270 290 310 330 350 370 390 410 430RAW RECOVERY, % DEPTH OF COVER, ft <br />7 <br />7.5 <br />8 <br />8.5 <br />9 <br />9.5 <br />10 <br />10.5 <br />11 <br />11.5 <br />12 <br />12.5 <br />13 <br />Mining <br />Height, <br />ft