1989-03-17_REPORT - M1977378

• Permit No: M1977378
• IBM Index Class Name: REPORT
• Doc Date: 3/17/1989
• Doc Name: Clarifications
• From: San Juan County Mining Venture
• To: MLRD
• Media Type: D
• Archive: No

that were apparent in the stereonet contour diagrams in Appendix A, but were not above
the statistical cutoff were labeled to investigate their potential to form wedge intersec-
tions.
3.2.2 Bench 2 Mapping
Limited mapping was performed on Bench 2 to increase the data base and because
the orientations of features exposed there appeared different than in Bench 1. Stereonets
of pole scatter, pole count contours, and pole percent contours for Bench 2 are presented
in Appendix B.
The PATCH program identified two joint pole clusters in the Bench 2 data. Table
3.2 lists the orientations and ranges. The location of the set poles is shown in Figure 3.5.
Joints in Bench 2 had somewhat lower dip angles than those mapped in Bench 1.
Table 3.2 Joint Set Orientations Identified by PATCH in Bench 2 Data
Set Dip Azimuth Dip Frequency
Designation (degrees) (degrees) of
Occurrence
Mean Range Mean Range
J13 230 ±8.3 71 ±7.9 50%
J12 333 ±24.0 76 ±23.0 21%
9