2014-12-29_REPORT - M1977215

• Permit No: M1977215
• IBM Index Class Name: Report
• Doc Date: 12/29/2014
• Doc Name: Interim Waste Rock Characterization Summary, 1.
• From: Rio Grande Silver, Inc.
• To: DRMS
• Email Name: RCO
• Media Type: D
• Archive: No

•#.
McCLELLAND LABORATORIES, INC.
1016 Greg Street,Sparks,Nevada 89431 [phone]
FAX[phone]
E-MAIL mli @mettest.com
Interim Report
on
Static ABA and Kinetic ARD Potential Testing
MLI Job No.3819
November 26, 2014
for
Mr. Randy McClure
Rio Grande Silver, Inc.
625 USFS Road 504.1A
Creede, CO 81130
TABLE OF CONTENTS
SUMMARY 1
SAMPLE PREPARATION 1
Table 1. - Composite Make-up Table, Bulldog Project 2
Table 2. - Split Weights for Various Tests and Analyses, Bulldog Project 2
Table 3. - Modified Acid/Base Accounting(Mod ABA) Static ARD
Potential Test Results, Bulldog Project 3
METEORIC WATER MOBILITY PROCEDURE (MWMP)AND RESULTS 3
Table 4. - MWMP Extract Test Data, Bulldog Project 3
Table 5. - Profile II Analytical Results, Bulldog Project 4
MODIFIED HC KINETIC ARD TEST PROCEDURES AND RESULTS 5
Table 6. - Humidity Cell Analytical Results, BDP-F1391-051113 (1.5162 kg),
Bulldog Project 6
Figure 1 a. - Weekly Humidity Cell Analytical Results 6
Figure lb. - Cumulative Humidity Cell Analytical Results 6
Figure 2a. -Weekly Humidity Cell Analytical Results 7
Figure 2b. - Cumulative Humidity Cell Analytical Results 7
Table 8. - Profile II Analytical Results, HC Extract, Bulldog Project,
Sample BDP-F1391-051113 8
Table 9. - Profile II Analytical Results, HC Extract, Bulldog Project,
Sample BDP-TBWTC-HC 9
In association with H.J. Heinen