2023-08-31_ENFORCEMENT - M1982121 (11)

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RMI - MID CONTINENT MINE Date: 4/13/2023 Location: Glenwood Springs,CO Sheet#: 1 of 1 ROCKNIASS DISCONTINUITY Domain: East Face Friction Angle: 35 KIL❑aLlFF CHARACTERIZATIONFORM Slope Length: 400 ft GSI Range: 65-75 Project#: P-23018SS Slope Dip/Direction: 80/172 Est.Comp.Strength: U N D E R G R ll N ENGINEERING , INC. Logged By: S.Sundermann Slope Type: Natural and Mined Line Survey Number: window survey Geologic Discontinuity Infilling/ Surface Seepage Significance Confidence Unit Type Dip Dir. Dip Persistence Spacing Aperature Weathering JRC Shape Roughness Termination Condition Rating(1-5) (High-Low) Notes/Failure Modes Limestone Fault 83 76 Medium NA Open Gouge Undulating Slickensided 0 7 5 Moderate Parallel fault splays Moderate Slightly Limestone Joint 67 72 Medium to Wide Partly unknown 8-10 Planar Rough 1 2 3 Low Base of East Face to Limestone Joint 178 26 Medium NA Very Wide No infill 16-18 Undulating Rough 2 1 5 Moderate Potential Sliding block cue Limestone Joint 177 90 Low NA Very Wide No infill 8-10 Planar Mod Rough 1 1 5 Low Release on sliding block Limestone Joint 36 29 Low NA Very Wide No infill 8-10 Planar Mod Rough 1 1 5 Moderate W Slightly Interbed?hifilled with weak clay Limestone Fault 32 50 Medium Very Wide Very Wide 4"weak 6-8 Planar Rough 0 7 4 High with clasts to Slightly a Limestone Joint 324 48 Medium Very Wide Very Wide weak infill 6-8 Planar Rough 0 7 4 High weak infill, Slightly Limestone Joint 238 83 High Very Wide Very Wide roots 6-8 Planar Rough 0 7 3 High Exfoliation in drainage Slightly Limestone Joint 227 80 Medium Very Wide Wide No infill NR Undulating Rough 1 1 4 High Limestone Bedding 185 29 Very High NR NR NR 10-12 Planar Mod Rough 0 NR 1 High Effervescent Limestone Bedding 180 30 Very High NR NR NR 10-12 Planar Mod Rough 0 NR 1 High Limestone Bedding 191 30 Very High Extr.Wide Very Wide Sandy CLAY 12-14 Planar Mod Rough 0 8 1 High Infill maybe secondary?Roots Limestone Joint 187 30 Very High Extr.Wide Very Wide No infill 12-14 Planar Mod Rough 0 2 2 High Very-Extr Limestone Bedding 186 30 Very High NR Wide Signs of soil 12-14 Planar Mod Rough 0 7 1 High Slightly Limestone Joint 63 40 Low Mod Close Open No infill 8-10 Planar Rough 1 1 3 High Secondary,possible release to Slightly d Limestone Joint 59 40 Low Mod Close Open No infill 8-10 Planar Rough 1 1 2 High Secondary,possible release 0 toLimestone Bedding 217 29 Very High Extr.Wide Extr.Wide Weak Imerbed 16-18 Planar Rough 0 3 1 High clasts of hard crystals *4 Limestone Bedding 202 29 Very High Extr.Wide Extr.Wide Weak Imerbed 16-18 Planar Rough 0 3 1 High clasts of hard crystals to G�. Q Limestone Bedding 198 30 Very High Extr.Wide Extr.Wide Weak Imerbed 16-18 Planar Rough 0 3 1 High clasts of hard crystals r'7 Mod Close- Slightly Limestone Joint 43 46 Low Wide Open No infill 8-10 Planar Rough 1 1 2 High Secondary,possible release Very-Extr Limestone Bedding 188 32 Very High Extr.Wide Wide Weak Interbed 14-16 Planar Rough 0 8 1 High CaCO3 Stalactites Slightly Limestone Joint 57 54 Low Mod Close Open No infill 8-10 Planar Rough 1 1 2 High Secondary,possible release Very-Extr Limestone Bedding 188 31 Very Fligh I Extr.Wide I Wide Weaklnterbed 14-16 Undulating I Rough 0 7 1 High CaCO3 Stalactites