PERMFILE130685

• Permit No: C1984065
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: APPENDIX 4.3-1 APPENDIX II ROCK TESTING RESULTS HOLE 3.75
• Media Type: D
• Archive: No

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•UNIRXIRL COMPRESSIVE STRENGTH AND ELRSTIC MODULUS
Sample No. WCL-3.75-U/E-4 Client STORM RING MINES,INC. Date 9/29/83
Sample Size
45.15» dia. x 138.15x» Surface Area 1, 530r~= Tested by RPS6BDB
PRE-TEST DESCRIPTION: COAL(Hole No. 3.75; 1,574.3'): Lover seam; clean; vitreous;
dense and competent sample; trace resin; closely spaced cleat
set(a~25°) intersects one end surface; strong appearance; large
chip missing from end surface; good sample.

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TEST COMMENTS: Fair Test: Fairly sudden failure; random shearing occurred in
upper 30mm of semple(a=20°); mildly irregular tension fracture
(a~15°) extended from upper end surface; tvo large pieces plus
numerous smaller pieces and fragments resulted.
Force of Failure 11.4 kN Unio:iol Compressive Strength 7.44 MPa
Tangent Modulus 1.34 GPa

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Secant Modulus N/A
Modulus Ratio N/'°' Stiffness N/A Poisson~6 Ratio N/A