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2023-07-14_PERMIT FILE - C1981010 (16)
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2023-07-14_PERMIT FILE - C1981010 (16)
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Last modified
8/4/2023 11:27:47 AM
Creation date
8/3/2023 1:15:05 PM
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DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Permit File
Doc Date
7/14/2023
Doc Name
Summary of Geotechnical Design andf Operational Cnsiderations for Highwall Mining-I,J,N, and L Pits
Section_Exhibit Name
Appendix X
Media Type
D
Archive
No
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January 2, 2020 Page B-4 <br />Agapito Associates, Inc. <br /> <br />Figure B-1c. J Pit, G2 Seam Recovery Chart <br />534-40 Trapper [534-40 Trapper_Design Charts18JUL2018.pptx]:dc/smvf (7-18-2018) <br />45 <br />50 <br />55 <br />60 <br />65 <br />70 <br />75 <br />80 <br />85 <br />50 70 90 110 130 150 170 190 210 230RAW RECOVERY (%)DEPTH OF COVER (ft) <br />3.6 <br />3.8 <br />4.0 <br />4.2 <br />4.4 <br />4.6 <br />4.8 <br />5.0 <br />5.2 <br />5.4 <br />5.6 <br />5.8 <br />6.0 <br />Mining <br />Height <br />(ft) <br />Design <br />Depth of Cover (ft) 3.6 3.8 4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6 <br />50 79.5 78.6 77.8 76.9 76.1 75.3 74.5 74.1 73.4 72.6 71.9 71.1 70.4 <br />65 77.2 77.3 76.9 76.5 75.7 74.9 74.1 73.7 72.9 72.2 71.4 70.7 70.0 <br />80 74.4 74.0 73.9 73.5 73.1 72.7 72.4 72.0 71.7 71.3 71.0 70.3 69.6 <br />95 72.2 71.4 71.0 70.6 70.2 69.8 69.4 69.1 69.0 68.7 68.3 68.0 67.7 <br />110 69.7 69.3 68.6 68.2 67.8 67.5 67.1 66.7 66.4 66.0 65.7 65.4 65.0 <br />125 67.8 67.0 66.7 66.0 65.6 65.3 64.6 64.3 64.0 63.6 63.3 62.7 62.4 <br />140 65.9 65.2 64.6 64.2 63.6 63.2 62.6 62.3 61.7 61.4 61.1 60.5 60.2 <br />155 63.7 63.3 62.9 62.3 61.9 61.3 60.7 60.4 59.9 59.6 59.0 58.7 58.2 <br />170 62.0 61.4 60.8 60.4 59.8 59.4 59.0 58.5 58.1 57.6 57.3 56.8 56.3 <br />185 60.5 59.7 59.1 58.6 58.0 57.5 56.9 56.6 56.0 55.7 55.4 54.9 54.6 <br />200 59.1 58.3 57.7 57.0 56.5 55.8 55.3 54.8 54.3 53.8 53.3 53.0 52.5 <br />215 57.7 56.9 56.4 55.7 55.0 54.5 53.8 53.4 52.7 52.3 51.7 51.2 50.8 <br />230 56.6 55.9 55.1 54.4 53.8 53.1 52.5 52.0 51.4 50.8 50.4 49.8 49.4 <br />Coal Strength (psi)568 Mining Width (ft)11.50 No. Web Pillars 19 <br />Mining Height (ft)
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